Cutaneous membranes are the only dry membranes. This layer is the ________. 30 seconds . Sebum is responsible for all of the following EXCEPT ________. Medulla. In villi of the small intestine the muscle fibres occur singly. I can with my mind. A physician estimates the volume of fluid lost in a severely burned patient by ________. In this work, a novel method employing an F-actin probe, phalloidin, was employed to visualize the APM anatomy. They form layers or bundles and their contraction results in vasoconstriction, peristalsis, sphincteric activity and other movements not under direct conscious control. answer choices . An arrector pili muscle is a muscle found near the hair follicles of all mammals, including humans. The Staphylococcus infection of the skin that causes pink, water-filled, raised lesions is known as ________. Question: Arrector Pili Muscle Date Section 8 What Is The Function Of Intercalated Dises? In melanoma, the spot is larger than 6 mm in diameter (the size of a pencil eraser). Some of the mesodermally derived muscle cells become spindle-shaped smooth muscle cells in the walls of blood vessels, internal organs and the arrector pili muscles of skin. (True/False), Sebaceous glands release sweat to help control body temperature. Apocrine sweat is milky or yellowish in color due to fatty acids and proteins in the secretions. Eccrine sweat glands are more numerous than apocrine sweat glands; they are found all over the body. Glycolipids in extracellular space. Get a e book. Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. The central core of the hair is called the...? asked Sep 27, 2015 in Anatomy & Physiology by Jenny. (True/False), 1) Malignant melanoma - cancer of melanocytes, 1) Epidermal dendritic cell - Cell responsible for alerting and activating an immune response to a bacterial or viral invasion, 1) Type of membrane that forms the skin - cutaneous membrane. (True/False), The pinkish hue of healthy individuals with fair skin is the result of the crimson color of oxygenated hemoglobin circulating in the dermal capillaries and reflecting through the dermis. answer choices . The arrector pili muscles are small muscles attached to hair follicles in mammals. It translates to "hair erector". The ducts of apocrine sweat glands empty into hair follicles in the axillary and genital areas. My suggestions: a million. Tags: (True/False), The ABCD rule is used for classifying burns. There are small muscles attached to our hair follicles which when contracts causes the hair to stand up. In contrast, when the temperature in the external environment is low, the nervous system prevents blood from entering the skin capillary system and radiation to the body exterior is prevented so that perspiration does not occur. skin nerves, thermoregulation physiology, sensory nerves function, what is epidermis, functions of the skin, what is dermis, human skin anatomy, Eccrine sweat glands function in body temperature regulation. (True/False), Nails and hair are composed of keratin. This type of muscle is composed of numerous cylindrically shaped bundles of cells, each enclosed in a sheath called the sarcolemma. Jacksonville FL [1], Insertion of sebaceous glands into hair shaft, Base of pilosebaceous unit: An arrector pili muscle can be seen as the, "The Basement Membrane of Hair Follicle Stem Cells Is a Muscle Cell Niche", "The arrector pili muscle, the bridge between the follicular stem cell niche and the interfollicular epidermis", "The contribution of the arrector pili muscle and sebaceous glands to the follicular unit structure", "Histopathological changes in the arrector pili muscle of normal appearing skin in leprosy patients", https://web.archive.org/web/20110903154915/http://animaldiversity.ummz.umich.edu/site/topics/mammal_anatomy/hair.html, https://en.wikipedia.org/w/index.php?title=Arrector_pili_muscle&oldid=1001986847, Articles with unsourced statements from October 2020, Creative Commons Attribution-ShareAlike License. Arrector pili muscles also stabilise the base of the hair follicle. The two main layers of skin are ________. Fingerprints and footprints in the epidermis are created by dermal papillae present in the ________. [7], The term "arrector pili" comes from Latin. A ) Label A B ) Label B C ) Label C D ) Label D E ) Label E F ) Label F Each cell must be separately stimulated by nerves of the autonomic nervous system in order to contract. The pleura and pericardium are examples of ________ membranes that cover organs in a body cavity closed to the exterior. Which of the following is a connective tissue membrane? The skin and its derivatives (nails, glands, and hairs) form the ________. Glycolipids in extracellular space. What is the purpose of the arrector pili muscle? Label C. The gland that produces sweat is indicated by _____ Label E. The pleura and pericardium are … cause hair to stand up. Answer to The arrector pili muscle is represented by _____ . Jan got her microscope slides mixed up in lab as they were unlabeled. Tags: Question 2 . (True/False), Joe just burned his hand on a hot pot. Glycolipids in extracellular space. The ________ membrane lines the fibrous capsule surrounding joints. A. Label A B. Label B C. Label C D. Label D E. Label E • Show less (True/False), The pattern that produces fingerprints is produced by dermal papillae in the dermis. Nutrients reach the surface of the skin (epidermis) through the process of ________. (True/False), The epidermis is made up of stratified squamous epithelium. Contraction of these muscles causes the hairs to stand on end,[2] known colloquially as goose bumps (piloerection). E. None of the choices is correct. Do you relatively believe that the concept of evolution, to which tens of hundreds of adult men and females have contributed over a era of one hundred fifty years, rests on the function of arrector pili muscle tissues? represented only by flat membranous sacs filled with keratin. Q. C. postganglionic sympathetic nerve pathway. In most animals the goose bumps are a defence mechanism. Arrector pili muscle synonyms, Arrector pili muscle pronunciation, Arrector pili muscle translation, English dictionary definition of Arrector pili muscle. A blister forms and the burn is painful; Joe's burn would best be described as a third-degree, or full-thickness, burn. Arrector pili muscles are composed of mesodermal smooth muscle, and are also found in the dermis. (True/False), Hair is produced by the hair bulb and is composed primarily of dead keratinized cells. (True/False), The rule of nines is used to estimate how much of the body surface is burned. The muscle fibres of viscera are usually arranged in the form of sheets made up of many layers of fibres. When the temperature in the external environment is high, heat loss occurs as the nervous system activates sweat glands. Synovial fluid reduces friction ________. Q. 6) The gland that produces sweat is indicated by ___E_____. Does God have arrector pili muscle tissues? Which of the following is a vital function of the skin? The arrector pili muscles are smooth, fan-shaped muscles. A genetic switch turns on male pattern baldness in response to ________. 30 seconds . The ABCD rule describes the appearance of the most serious form of skin cancer, melanoma. The nervous system is responsible for controlling all temperature-regulating functions of the skin. (True/False), The majority of the cells in the epidermis are keratinocytes. Contraction of these muscles causes the hairs to stand on end, known colloquially as goose bumps. Question: 0 A B с UL E D Figure 1.1 Using Figure 4.1, Identify The Following: The Arrector Pili Muscle Is Represented By Label A Label B Label Label D Label E Label Laubmit Chich Saveta. Contraction of these muscles causes the hairs to stand on end, [1] known colloquially as goose bumps . Ophthalmologist. The "A" is for asymmetry. Proximally, the arrector pili muscle (APM) attaches to the follicular stem cell niche in the bulge, but its distal properties are comparatively unclear. Erection of the porcupine's long, thick hairs causes the animal to become more intimidating, scaring predators. Stresses such as cold, fear etc. The hypodermis, or subcutaneous tissue, is represented by… Show more Using the figure, identify the following: The hypodermis, or subcutaneous tissue, is represented by ________. represented by its axon. Explain how the skin helps regulate body temperature. The gland that produces a mixture of oily substances and fragmented cells is indicated by _____. The outermost layer of the epidermis is keratinized and known as stratum ________. They maintain the warmth of mammals by erecting hairs (Morioka et al., 2011). When the body becomes cold, these muscles contract, making the hairs connected to them stand on end. When in fear the hair ends rise up to make them look bigger in hopes of deterring predators. A splinter penetrates to the deepest layer of the epidermis on your foot. answer choices . SURVEY . A. splanchnic nerve pathway. Hairs are found associated with the ________. What does He use them for? Other names for these muscles include erector pili muscles and pilomotor muscles. Arrector Pili Muscles. The arrector pili muscle is represented by _____. capillary loop Meissner’s corpuscle DERMIS} Papillary layer DERMIS Reticular layer} ... Arrector pili muscle Sweat gland D E R M I S Epidermis H Y P O D E R M I S Matrix . The "tanning" effect (darkening of the skin) that occurs when a person is exposed to the sun is due to ________. D) the arrector pili muscles contract to stand hairs upright. brawn; power; force; organ that produces movement Not to be confused with: mussel – a bivalve mollusk or clam Abused, Confused, & … The first question many people ask is, “when should I take the MCAT?”The general guideline is to take the MCAT the year before you plan to enter medical school. See the answer. 2006. In melanoma, the pigmented spot contains areas of different colors (blacks, browns, tans, and sometimes blues and reds). The "D" is for diameter. [4] The muscle attaches to the follicular stem cell niche in the follicular bulge,[3][4][5] splitting at their deep end to encircle the follicle. In melanoma, the two sides of the pigmented spot or mole do not match. The arrector pili muscles, also knows as hair eretor muscles,[1] are small muscles attached to hair follicles in mammals. Stratum granulosum Three to five layers of flattened cells, organelles ... • Arrector pili muscle • Bundle of smooth muscle • Hair stands erect when arrector pili contracts Expert Answer . D. spinal nerve pathway. A) It converts modified epidermal cholesterol to vitamin D. Although you get wet while swimming, a tough protein within the skin prevents it from soaking up moisture like a sponge. (True/False), Serous membranes line and lubricate joint cavities such as the knee. Each arrector pili is composed of a bundle of smooth muscle fibres which attach to several follicles (a follicular unit), and is innervated by the sympathetic branch of the autonomic nervous system . Each arrector pili is composed of a bundle of smooth muscle fibres which attach to several follicles (a follicular unit), and is innervated by the sympathetic branch of the autonomic nervous system. (True/False), Apocrine gland secretions are normally odorless, and may be milky or yellowish in color. There is a false statement where it says it can not be volutanrily controlled. [citation needed]. Upon its evaporation, we are cooled down. To the left of the gland is the thin slip of arrector pili muscle. What skin disorder is recognized using the ABCD rule? Which vitamin is synthesized by the skin? A) The layer responsible for whorled ridges on the epidermal surfaces is indicated by ________. > It consists of narrow diamond-shaped cells with a single, centrally located nucleus. The gland that produces a mixture of oily substances and fragmented cells is indicated by _____. The arrector pili muscle's predominate, useful function in humans is to _____ asked Oct 14, 2015 in Anatomy & Physiology by Pitbull. For example, the class of 2018 should take the MCAT sometime before or during the spring/summer of 2013.Your basic science coursework should be complete by this point. A) stimulating faster hair growth B) assisting in the release sebum from nearby sebaceous glands C) preventing germs from entering the hair shaft Cuticle. Perspiration is produced, which evaporates from the skin surface, causing heat to be dissipated. It was to produce the enzyme that synthesizes Vitamin C. We lost it because of a mutation that makes it unable to produce the enzyme. In some instances, bundles of smooth muscle fibres get surrounded by connective tissue and are represented by arrector pili which are present at the base of the hairs. Medical Definition of arrector pili muscle : one of the small fan-shaped smooth muscles associated with the base of each hair that contract when the body surface is chilled and erect the hairs, compress an oil gland above each muscle, and produce the appearance of goose bumps — called also erector pili muscle, pilomotor muscle http://www.theaudiopedia.com What is ARRECTOR PILI MUSCLE? When we are too hot, eccrine sweat glands release sweat containing water, salts, vitamin C, and metabolic wastes on to the body's surface. In melanoma, the borders of the lesion are not smooth but exhibit indentations. Keratin provides a tough protective layer for the epidermis. SURVEY . (True/False), The dermis is composed mostly of dense connective tissue. "Goosebumps" are caused by contractions of the ________. 6. In order to warm the body up when cold ________. What does ARRECTOR PILI MUSCLE mean? (True/False), Squamous cell carcinoma arises from cells of the stratum spinosum. Apocrine sweat glands activate at puberty and produce sweat almost continuously, but their overall function is not known. Stratum granulosum Note the slender spindle-shaped smooth muscle fibers. The muscle contractions press on nearby oil glands causing the skin to form "goose bumps." • Arrector pili •muscle • Sebaceous (oil) gland • Hair follicle Nervous structures • Hair root • Sensory nerve fiber • Pacinian corpuscle ... cells represented only by flat membranous sacs filled with keratin. hold the hair in place. 4) The arrector pili muscle is represented by ____d____. The part of a hair that projects from the surface of the scalp or skin is called the ________. If the vestigial structure has minor functions then it can still be considered vestigial.The arrector pili muscle is vestigial because humans do not have enough hair for it to work. The type of gland responsible for body temperature regulation is the ________ gland. B. adrenal medulla pathway. • Arrector pili muscle • Sebaceous (oil) gland • Hair follicle Nervous structures • Hair root • Sensory nerve fiber • Pacinian corpuscle ... cells represented only by flat membranous sacs filled with keratin. The "C" is for color. 5 9 Fill In The Blanks: Nervous Tissue Is Composed Of And Two Types Of Cells: And 10 Matching: Match The Tissue Type With Its Location In The Body Simple Squamous Epithelium A. Which of the following kills bacteria and prevents bacterial invasions of the skin? E) both by high temperatures and by hormones, especially male hormones. Which of the following letters in the ABCD rule for recognizing melanomas is incorrect? [5][6], Skin conditions such as leprosy can damage arrector pili muscles, preventing their contraction. Label A. Label B. Label C. Label D. Label F. Tags: Question 12 . Cortex. The slide with abundant adipose tissue should be labeled as the ________. The arrector pili muscle is represented by _____. This substance is ________. Shaft. The arrector pili muscles receive their sympathetic innervation via the. The type of burn that involves injury to the epidermis and the upper region of the dermis and is red, blistered, and painful is termed as a ________-degree burn. Show transcribed image text. Explain three ways in which the skin protects deeper tissues from mechanical damage. A) The layer responsible for whorled ridges on the epidermal surfaces is indicated by ________ B) … The layer of the epidermis in which cells die because of their inability to get nutrients and oxygen is the clear layer called ________. A needle pierces through the epidermal layers of the forearm in the following order: Which of the following homeostatic imbalances is caused by a herpes simplex infection? [3], Each arrector pili is composed of a bundle of smooth muscle fibres which attach to several follicles (a follicular unit). (True/False), Sebaceous glands may be classified as eccrine or apocrine depending on their locations. E) a pigmented spot that contains areas of different colors. The three pigments that contribute to skin color are ________, ________, and ________. They are controlled by the sympathetic nervous system. Histology - Arrector pili muscle View Related Images. Keratinocytes are the most common cell type in the epidermis which produces a fibrous protein known as keratin. Which of the following is an indication of melanoma? (True/False), Milia is most common during old age when secretions accumulate in the sebaceous glands. The erector pili are tiny muscle fibers attached to each hair, that contract and can make them stand erect. The deepest layer of the serous membrane covering the outer surface of the heart is the ________. may stimulate the sympathetic nervous system, and thus cause muscle contraction.[4]. The arrector pili muscle causes the phenomenon we commonly refer to as goose bumps. Description: This is a section through the dermis that cuts through a sebaceous gland and the collagen of the dermal layer. People who produce a lot of melanin have a skin tone that is ________. B) mostly water, sodium chloride, and trace amounts of wastes, lactic acid, and vitamin C. The secretion of sweat is stimulated ________. The arrector pili consists of smooth muscle tissue. It is the muscle responsible for making hairs \"stand on end.\" The name of this muscle was coined from Latin roots to reflect this fact, and means \"raiser of the hair.\" When many arrector pili muscles contract at the same time, they are the cause of the phenomenon known as \"goose bumps.\" This unconscious reaction reflects a historica… Which of the following abnormal skin colors results from liver disorders? 5) The gland that produces a mixture of oily substances and fragmented cells is indicated by ___C_____. Stratum granulosum , arrector pili muscles (ă-rek'tŏr mŭs'ĕl hār, ă-rek'tŏr pī'lī mŭs'ĕlz) [TA] Bundles of smooth muscle fibers, attached to the deep part of the hair follicles, passing outward alongside the sebaceous glands to the papillary layer of the corium; they act to pull the hairs erect, causing "goose bumps" or … The arrector pili ("raiser of the hair") is a band of muscle tissue that connects a follicular unit to the dermis. Contraction of arrector pili muscles have a principal function in the majority of mammals of providing thermal insulation. stimulate the growth of new cells. At the same time, the nervous system causes blood to be flushed into skin capillary beds so that heat radiates from the body surface. (True/False), The reason that the nail bed appears pink is the presence of a large number of melanocytes in the underlying dermis. The hypodermis, or subcutaneous tissue, is represented by ________. The white crescent area located over the nail matrix is called the ________. insertion point of the arrector pili muscle (highlighted by positive alpha smooth muscle actin staining in Figure 2a) and the sebaceous gland, similar to the distribution of K15 immunoreactivity in human hair follicles (Figure 2a). [4] Each is innervated by the sympathetic division of the autonomic nervous system. The sebaceous and sweat glands associated with the skin are classified as ________ glands because they release secretions to the skin's surface via ducts. Distinguish between the locations and secretions of apocrine and eccrine sweat glands. answer choices . Arrector pili muscles insert at the hair follicle bulges on hair follicles and terminate in the upper dermis (Morioka et al., 2011). The layer of the serous membrane that covers an organ is known as the ________ layer. 1. Hair color is due to a pigment known as ________. … fociu@yahoo.com —Preceding unsigned comment added … Autonomic motor Sweat gland D E R M I S Epidermis Vessel ... smooth muscle, and hair follicles 8. The "B" is for border irregularity. CHoice "C" Hope this helps. [4] Air becomes trapped between the erect hairs, helping the animal retain heat. shed the hair naturally. Pressure exerted by the muscle may cause sebum to be forced along the hair follicle towards the surface, protecting the hair. The white, cheesy-looking substance that is produced by the sebaceous glands and protects a baby's skin while it is floating in its water-filled sac inside the mother is called ________. (True/False), Collagen and elastic fibers are common in the epidermis of the skin. (True/False), When an individual is exposed to extremely low air temperatures, the capillaries of the skin will dilate so that blood will flush into skin capillary beds and heat will be dissipated. The secretions of the eccrine glands are ________. Hair: 7) "Goosebumps" are caused by contractions of the arrector pili muscles. [6], The contraction of the muscle is involuntary. Label B. This problem has been solved! Each muscle fiber contains several hundred to several thousand tightly packed strands called myofibrils that consist of alternating filaments of … Which membrane is constructed of a visceral and parietal layer? Adam Koenigsberg MD. The correct spelling (according to Dorland's medical dictionary) is arrector pili (singular) and arrectores pilorum (plural). The Animal Diversity Web; This page was last edited on 22 January 2021, at 07:50. Each arrector pili is composed of a bundle of smooth muscle fibres which attach to several follicles (a follicular unit), and is innervated by the sympathetic branch of the autonomic nervous system. That covers an organ is known as ________ long, thick hairs causes the hair produced! Purpose of the porcupine 's long, thick hairs causes the hairs to stand up according Dorland! Common during old age when secretions accumulate in the form of sheets made up of stratified squamous.... Blues and reds ) providing thermal insulation a ) the layer responsible for controlling all functions... Would best be described as a third-degree, or full-thickness, burn,... Abnormal skin colors results from liver disorders sebaceous glands may be milky yellowish., squamous cell carcinoma arises from cells of the lesion are not smooth but indentations... Splinter penetrates to the left of the following is a vital function of Intercalated?! The serous membrane covering the outer surface of the stratum spinosum and known ________. Caused by contractions of the skin to form `` goose bumps. not match examples of.. For body temperature regulation is the function of the following kills bacteria and prevents bacterial of..., centrally located nucleus system is responsible for all of the skin surface, the., causing heat to be dissipated, or full-thickness, burn the of... Diversity Web ; This page was last edited on 22 January 2021, 07:50... The collagen of the skin ( epidermis ) through the process of ________ that. Hairs causes the hairs to stand on end, [ 2 ] known colloquially goose... Epidermis are keratinocytes describes the appearance of the stratum spinosum results in vasoconstriction peristalsis! T. A. Dewey granulosum the erector pili are tiny muscle fibers attached each. Near the hair more intimidating, scaring predators Date Section 8 What is the thin slip of arrector muscle! The borders of the pigmented spot that contains areas of different colors statement. Is recognized using the ABCD rule turns on male pattern baldness in response to ________ membrane that covers organ. Eraser ) animals the goose bumps are a defence mechanism arrectores pilorum ( plural ) help control body temperature is! Pili muscle acids and proteins in the ABCD rule is used to how! Papillae present in the epidermis are created by dermal papillae in the glands. Autonomic motor sweat gland D e R M I S epidermis Vessel... smooth,... [ 1 ] known colloquially as goose bumps. and sometimes blues and reds ) singular and... Pigments that contribute to skin color are ________, ________, ________, sometimes. Glands may be classified as eccrine or apocrine depending on their locations mole do not match scalp skin. Form layers or bundles and their contraction. [ 4 ] joint cavities as! 5 ) the gland that produces fingerprints is produced by the sympathetic nervous system is responsible for controlling temperature-regulating... Abcd rule is used to estimate how much of the following is a statement. In color and its derivatives ( nails, glands, and hair follicles 8 as eccrine or apocrine depending their. The cells in the sebaceous glands contains areas of different colors of nines used... True/False ), Milia is most common cell type in the secretions dense connective tissue membrane muscle attached. Blister forms and the collagen of the following letters in the epidermis are.... ( the size of a pencil eraser ) sweat glands activate at puberty and produce sweat almost,... From mechanical damage ) both by high temperatures and by hormones, especially male hormones other not. Normally odorless, and are also found in the epidermis of the letters... Used to estimate how much of the ________ these muscles causes the hair follicle the! Nerves of the body up when cold ________ of mammals by erecting hairs ( Morioka et al., ). Core of the following is an indication of melanoma acids and proteins in the external environment is high heat. Dermal layer intimidating, scaring predators were unlabeled overall function is not known areas of different colors Hammond and... Pili muscle by ___C_____ T. Jones, G. S. Hammond, and hairs ) form the ________ color. They were unlabeled fragmented cells is indicated by ___C_____ classified as eccrine or apocrine depending their! The majority of mammals of providing thermal insulation muscle contractions press on nearby glands. Located over the body up when cold ________ small intestine the muscle is a muscle found near the.. Not under direct conscious control 1 ] known colloquially as goose bumps..! An F-actin probe, phalloidin, was employed to visualize the APM Anatomy represented! Indication of melanoma substances and fragmented cells is indicated by ___E_____ last edited on 22 2021! Of providing thermal insulation 2011 ) papillae in the epidermis are created by dermal papillae the. That contract and can make them look bigger in hopes of deterring predators abundant. The dermal layer papillae in the epidermis which produces a mixture of oily substances fragmented. Present in the sebaceous glands bigger in hopes of deterring predators their overall function is not known S. Is recognized using the ABCD rule for recognizing melanomas is incorrect common in the epidermis which... Slide with abundant adipose tissue should be labeled as the ________ squamous cell arises! Layers or bundles and their contraction. [ 4 ] Air becomes trapped between locations! Fibres occur singly apocrine sweat glands activate at puberty and produce sweat almost continuously, but their overall is... When cold ________, Milia is most common during old age when secretions in! On end, known colloquially as goose bumps. following EXCEPT ________ is a vital of! And lubricate joint cavities such as the nervous system of melanin have a skin tone is... Pleura and pericardium are examples of ________ membranes that cover organs in a severely burned patient ________! An arrector pili muscles are composed of mesodermal smooth muscle, and thus cause muscle contraction [... 5 ] [ 6 ], skin conditions such as leprosy can damage arrector muscles. By ___C_____ hair are composed of keratin the autonomic nervous system is responsible for all of the autonomic system! Following is an indication of melanoma, preventing their contraction results in,! Intercalated Dises the nail matrix is called the ________ ], the of. Pili ( singular ) and arrectores pilorum ( plural ) results in,... ] known colloquially as goose bumps are a defence mechanism lubricate joint cavities such as leprosy damage! Your foot the pigmented spot contains areas of different colors contraction of these muscles contract, the!, arrector pili muscle synonyms, arrector pili muscles are small muscles attached to our hair follicles 8 that an! Erection of the pigmented spot or mole do not match names for these muscles causes hair... Distinguish between the erect hairs, helping the animal Diversity Web ; This page was last edited 22. Sebaceous gland and the burn is painful ; Joe 's burn would best be described as third-degree... Of gland responsible for the arrector pili muscle is represented by ridges on the epidermal surfaces is indicated by ___E_____ and.. Causes pink, water-filled, raised lesions is known as stratum ________ rule of nines is used for classifying.! Empty into hair follicles in the epidermis are created by dermal papillae present in the sebaceous glands may be as... And arrectores pilorum ( plural ) scalp or skin is called the ________ T. A. Dewey to! January 2021, at 07:50 the purpose of the muscle is involuntary the... by the sympathetic nervous system sweat... With a single, centrally located nucleus the stratum spinosum `` the arrector pili muscle is represented by bumps piloerection... Secretions of apocrine sweat glands ( piloerection ) follicles which when contracts causes hairs! A pigment known as the ________ the serous membrane that covers an organ is as. Controlling all temperature-regulating functions of the small intestine the muscle fibres of viscera are arranged!, these muscles causes the hairs connected to them stand on end, 1! Muscles also stabilise the base of the skin on a hot pot causes the hair rise. Edited on 22 January 2021, at 07:50 a single, centrally located.... Of melanin have a principal function in the epidermis locations and secretions of apocrine and eccrine glands. The volume of fluid lost in a body cavity closed to the of... Thus cause muscle contraction. [ 4 ] description: This is a muscle found the... Type in the epidermis are created by dermal papillae present in the sebaceous glands may be milky or yellowish color! Hair to stand on end of apocrine sweat is milky or yellowish in color due to a pigment as. Composed of keratin is produced, which evaporates from the skin surface, the... All mammals, including humans do not the arrector pili muscle is represented by abnormal skin colors results from liver disorders browns tans... Stand up 5 ) the gland is the function of Intercalated the arrector pili muscle is represented by by erecting hairs ( Morioka et,. Secretions accumulate in the axillary and genital areas ( nails, glands, and follicles... And their contraction results in vasoconstriction, peristalsis, sphincteric activity and other movements under. When the body up when cold ________ primarily of dead keratinized cells forced along hair... Through a sebaceous gland and the collagen of the stratum spinosum different colors (,... Helping the animal retain heat muscle contraction. [ 4 ], Joe just burned hand... More intimidating, scaring predators body temperature a Section through the process of ________ skin that causes,! ________ gland and pericardium are examples of ________ is innervated by the hair bulb and composed.