Anat Lab Final BB Extra credit quiz skin

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From the basement membrane outward, the strata of the epidermis (thin skin) are

basale, spinosum, granulosum, corneum

The two major regions of the dermis are the superficial ____________ layer and the deeper ____________ layer.

papillary; reticular

Which integumentary excreting glands are distributed over most of the body surface?

sebaceous and merocrine sweat glands

Which epidermal layer is found in thick skin only?

stratum lucidum

Apocrine sweat glands occur in all of the following locations except

the palms

The terms thick and thin skin refer to the relative thickness of the

epidermis only

Limited exposure to ultraviolet radiation is useful because it

helps epidermal cells convert a steroid to vitamin D3

Both hair and nails are composed mainly of dead cells packed with

keratin

What are the most abundant cells found in the epidermis?

keratinocytes

Which epidermal pigment protects nuclear DNA by absorbing potentially damaging ultraviolet radiation?

melanin


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