The deepest layer of the epidermis is
a. stratum germinativum
b. stratum spinosum
c. stratum lucidum
d. stratum corneum
e. stratum granulosum - Answers stratum germinativum (basale)
Which of the following statements is most correct for melanocytes?
a. Shield DNA from UV light
b. concentration of cells similar in all ethnicities
c. concentrated in the stratum basale
d. all of the above
e. only A & C are correct - Answers All of the above
A very thin layer in the epidermis called the ______ _______ and is visible only in thick skin.
a. stratum germinativum
b. stratum spinosum
c. stratum lucidum
d. stratum corneum
e. stratum granulosum - Answers stratum lucidum
The _________ layer of the dermis contains capillary loops from which nutrients diffuse to nourish the
epidermis.
a. papillary layer
,b. reticular layer
c. macular layer
d. stratum basale
e. none of the above - Answers papillary layer
The dermis
a. contains no blood vessels
b. functions as padding and insulation
c. is divided into three distinct layers
d. is responsible for most of the skin's structural strength
e. does not contain connective tissue - Answers is responsible for most of the skin's structural strength
The stratum basale
a. is easily shed when you rub your hands together
b. has a mixture of living and dead cells - mostly dead
c. contains many blood vessels that nourish the epidermis
d. contains cells that undergo mitosis to form new epidermal cells.
e. contains cells that undergo meiosis to form new epidermal cells. - Answers contains cells that undergo
mitosis to form new epidermal cells.
Nutrients reach the surface of the skin (epidermis) through the process of
a. absorbing material applied to the surface layer of the skin
b. utilizing the products of the merocrine glands to nourish the epidermis
c. the outer layer of the skin does not require nutrients because the external layer of cells is not living.
d. diffusing through the tissue fluid from blood vessels in the epidermis. - Answers diffusing through the
tissue fluid from blood vessels in the epidermis.
, Cyanosis is indicative of
a. lack of tyrosinase
b. liver disease
c. inflammation
d. insufficient oxygen in the blood
e. patchy loss of melanocytes - Answers insufficient oxygen in the blood
in a(n) _______ degree burn, the epidermis and upper region of the dermis are damaged. Blistering is
common.
a. first
b. second
c. third
d. fourth
e. none of the above - Answers second
All of the following are accessory structures of the integumentary system EXCEPT
a. nails
b. hypodermis
c. multicellular exocrine glands
d. hair
e. sweat glands - Answers hypodermis
Keratinocytes are the predominant cells in the:
a. epidermis
b. papillary region of the dermis