The Human Body in Health & Disease - Memmler's 13th Edition - Chapter 6 - The Integumentary System Exam with correct Answers
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The Human Body In Health & Disease -
The Human Body in Health & Disease - Memmler's 13th Edition - Chapter 6 - The Integumentary System Exam with correct Answers
Epidermis - Answer-Outermost layer; Composed entirely of epithelial cells & contains NO blood vessels
/.Dermis - Answer-Connective tissue portion of the cutaneous membr...
Epidermis - Answer-Outermost layer; Composed entirely of epithelial cells & contains
NO blood vessels
/.Dermis - Answer-Connective tissue portion of the cutaneous membrane; Contains
many blood vessels, nerve endings, & glands; (aka "true skin")
/.Stratum Basale - Answer-New cells produced from stem cells here; Melanin produced
here by melanocytes
/.As epidermal cells die their cytoplasm is replaced by a large amount of a protein called
___________, which thickens and protects the skin - Answer-Keratin
/.Stratum Corneum - Answer-Uppermost layer of epidermis consisting of flat, keratinized
("cornified") cells
/.Melanin - Answer-Skin's main pigment; Dark pigment that colors the skin and protects
it from sunlight's harmful rays; Produced by melanocytes in deepest layer of epidermis
/.Dermal Papillae - Answer-Portions of the dermis extending upward into the epidermis
(ex: fingerprints)
/.The skin rests on a connective tissue membrane called the ____________ layer. -
Answer-Subcutaneous (aka hypodermis; aka superficial fascia)
/.Subcutaneous Layer - Answer-Consists of areolar connective tissue and adipose;
Continuous bundles of elastic fibers connect this with the dermis; Rich in blood vessels
and nerves & nerve endings
/.Sebaceous (Oil) Glands - Answer-Saclike in structure, produce sebum (oil), lubricates
the skin & hair and prevents drying; Ducts of these glands open into hair follicles
/.Vernix Caseosa - Answer-Babies are born with this covering produced by the
sebaceous glands that resembles cream cheese
/.Meibomian Glands - Answer-Associated w/ the eye lashes & produce a secretion that
lubricates the eyes
/.Sudoriferous (Sweat) Glands - Answer-Coiled, tubelike structures located in the dermis
and subcutaneous tissue; Most function to cool body
, /.Eccrine Glands - Answer-Sweat glands; Distributed throughout the skin
/.Apocrine Glands - Answer-Sweat glands; Located mainly in armpits and groin area;
Become active at puberty & release secretion through follicles in response to emotional
stress or sexual stimulation; Release some cellular material
/.Body Odor develops from the action of bacteria in breaking down the cellular materials
secreted by the _________ __________ - Answer-Apocrine Glands
/.Ceruminous Glands - Answer-Found in ear canal; Produce Cerumen (ear wax)
/.Ciliary Glands - Answer-Found at edges of eyelids
/.Hair Follicle - Answer-Sheath of epithelial & connective tissue that encloses the hair;
hair develops from stem cells located in a bulb at base of follicle
/.Hair Shaft - Answer-Part of hair that projects above the skin
/.Hair Root - Answer-Portion of hair below the skin
/.Arrector Pili - Answer-"Hair Raiser;" This band of involuntary muscle attached to most
hair follicles; (Associated w/ goose bumps)
/.Nails are made of hardened ___________ formed by the epidermis - Answer-Keratin
/.Nail Matrix - Answer-Growth region of nail
/.The nail plate rests on the nail ______. - Answer-Bed
/.Lunula - Answer-"Little Moon" of finger nail
/.Cuticle - Answer-Extension of stratum corneum; Seals space between nail plate & skin
above the root
/.Vitamin ____ is manufactured in the skin under the effects of UV rays in sunlight -
Answer-Vitamin D
/.Discoloration - Answer-Any distinct change in skin color from the norm
/.The ___________ in the skin helps to protect against sunlight's damaging UV radiation
- Answer-Melanin
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