Exam 10: Skin

Albinism is the inability of the body to form melanin.

Which skin layer has cells that look prickly because of the desmosomes that join the cells together?

The basic ingredient in the skin that determines skin color is melanin.

Match each layer of the epidermis with its corresponding characteristics. -A single layer of columnar cells that undergo mitosis

A group of active basal cells, together with its vertical column of migrating keratinocytes, is called a dermal proliferating unit, or DPU.

Keratin is an important skin pigment that protects against ultraviolet light.

The gland that produces the waxy secretion in the external ear canal is a sebaceous gland.

The rule of palms and the rule of tens are two methods used in estimating the extent of body surface area burned.

Match each layer of the epidermis with its corresponding characteristics. -Layer that is absent in thin skin; cells are filled with a gel-like substance called eleidin

The cells at the surface of the skin are dead.

Fever is always detrimental to the body, so the body temperature should be reduced to normal as soon as possible.

Explain the role of the blood vessels in the skin in the homeostatic regulation of heat loss in the body.

The most numerous, important, and widespread sweat glands in the body are:

The fibers in which layer make it possible for skin to stretch and be elastic?

Match each layer of the epidermis with its corresponding characteristics. -Most superficial layer of the epidermis; composed of very thin squamous cells

The layer beneath the dermis is called the:

One of the important functions of the skin is the synthesis of vitamin D.

A primary function of the dermal-epidermal junction is to "glue" together the dermis and the epidermis.

Shivering is a good example of the body's attempt to produce more heat.

Melanosomes help prevent DNA mutations when the cell is exposed to ultraviolet radiation.