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the two functional components of the integument include

cutaneous membrane and accessory structures

the skin maintains normal body temperature by regulating

heat gain or loss to the environment

the structures of the integument system involved in protection is/are

hair, skin, and nails

all of the following are functions of the integumentary system except

synthesis of vitamin A

the link between the integument and the nervous system is in the form of

receptors in the skin

the layers of the epidermis where mitotic divisions occur are

germinativum and spinosum

epidermal cells in the stratum spinosum and germinativum function as chemical factories in that they can convert

steroid precursors to vitamin D

the lower epidermal layers of the skin are responsible for

vitamin D production

keratin, a fibrous protein, would be found primarily in the

stratum granulosum

the area where the skin is thick such as the palms of the hands and the soles of the feet, is called the

stratum lucidum

differences in skin color between individuals relfect

levels of melanin synthesis

the two basic factors interacting to produce skin color are

blood circulation and pigment

darker skin color is produced as a result of

active melanocytes

some people only "burn" when exposed to the sun because

they do not have a "tanning" gene

the pigment which absorbs UV radiation before it can damage mitchondrial DNA is


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