VISUAL ANATOMY AND PHYSIOLOGY
CHAPTER 27 EXAM PREP QUESTIONS AND
ANSWERS FULLY VERIFIED
◉ integumentary system.
Answer: skin; includes two major components: cutaneous
membrane and accessory structures
◉ cutaneous membrane.
Answer: includes epidermis and dermis
◉ functions of integumentary system.
Answer: 1 - protection; 2 - vitamin D3 synthesis; 3 - excretion; 4 -
sensation; 5 - temperature regulation; 6 - produce melanin
(protection from ultraviolet radiation from sun); 7 - produce keratin
(protection from abrasion and serves as water repellent); 8 - stores
lipids
◉ layers of skin.
Answer: epidermis
dermis
hypodermis
,◉ epidermis.
Answer: several layers (strata) of keratinocytes;
consists of stratified squamous epithelial tissue
◉ epidermal ridges.
Answer: deep layers of epidermis that extend into dermis and are
adjacent to dermal papillae; increase surface area for binding of
dermis to epidermis
◉ dermal papillae.
Answer: upper layers of dermis that project into epidermis; increase
surface area for binding of dermis to epidermis
◉ thin skin.
Answer: covers most of body surface; has four layers: stratum
corneum, stratum ganulosum, stratum spinosum, and stratum
basale
◉ thick skin.
Answer: found on palms of hands and soles of feet; has five strata
instead of four: stratum corneum, status lucidum, stratum
ganulosum, stratum spinosum, and strum basale
, ◉ stratum corneum.
Answer: uppermost layer of epidermis; exposed surface of skin; 15-
30 layers of kerotinocytes; water resistant but not water proof
◉ keratin.
Answer: fluid inside kerotinocytes
◉ insensible perspiration.
Answer: water from interstitial fluid that slowly penetrates to the
epidermal surface and evaporates; person does not see or feel this
water loss; about 1 pint of water per day
◉ sensible perspiration.
Answer: fluid produced by active sweat glands; person is usually
aware of sweating
◉ stratum lucidum.
Answer: "clear" layer of epidermis found only in thick skin under
stratum corneum in epidermis; flattened, densely-packed cells filled
with keratin and keratonhyalin
◉ stratum granulosum.
Answer: "grainy" layer of epidermis that has 3-5 layers of
keratinocytes that have stopped dividing
CHAPTER 27 EXAM PREP QUESTIONS AND
ANSWERS FULLY VERIFIED
◉ integumentary system.
Answer: skin; includes two major components: cutaneous
membrane and accessory structures
◉ cutaneous membrane.
Answer: includes epidermis and dermis
◉ functions of integumentary system.
Answer: 1 - protection; 2 - vitamin D3 synthesis; 3 - excretion; 4 -
sensation; 5 - temperature regulation; 6 - produce melanin
(protection from ultraviolet radiation from sun); 7 - produce keratin
(protection from abrasion and serves as water repellent); 8 - stores
lipids
◉ layers of skin.
Answer: epidermis
dermis
hypodermis
,◉ epidermis.
Answer: several layers (strata) of keratinocytes;
consists of stratified squamous epithelial tissue
◉ epidermal ridges.
Answer: deep layers of epidermis that extend into dermis and are
adjacent to dermal papillae; increase surface area for binding of
dermis to epidermis
◉ dermal papillae.
Answer: upper layers of dermis that project into epidermis; increase
surface area for binding of dermis to epidermis
◉ thin skin.
Answer: covers most of body surface; has four layers: stratum
corneum, stratum ganulosum, stratum spinosum, and stratum
basale
◉ thick skin.
Answer: found on palms of hands and soles of feet; has five strata
instead of four: stratum corneum, status lucidum, stratum
ganulosum, stratum spinosum, and strum basale
, ◉ stratum corneum.
Answer: uppermost layer of epidermis; exposed surface of skin; 15-
30 layers of kerotinocytes; water resistant but not water proof
◉ keratin.
Answer: fluid inside kerotinocytes
◉ insensible perspiration.
Answer: water from interstitial fluid that slowly penetrates to the
epidermal surface and evaporates; person does not see or feel this
water loss; about 1 pint of water per day
◉ sensible perspiration.
Answer: fluid produced by active sweat glands; person is usually
aware of sweating
◉ stratum lucidum.
Answer: "clear" layer of epidermis found only in thick skin under
stratum corneum in epidermis; flattened, densely-packed cells filled
with keratin and keratonhyalin
◉ stratum granulosum.
Answer: "grainy" layer of epidermis that has 3-5 layers of
keratinocytes that have stopped dividing
