Exam 10: Skin

The body's temperature control center is located in the hypothalamus.

Describe the formation of hair, and describe the parts of a hair follicle.

Matt is admitted to the hospital with burns to the deep epidermal layers and injury to the upper layers of the dermis. The physician treats Matt's condition as a _____ burn.

The skin of an infant is more easily damaged by penetration or abrasion than that of an adult. Which layer is probably thinner in an infant than in an adult?

Which cells of the skin act as a type of antigen-presenting cell in the skin?

Of the five epidermal cell layers, the only one that can undergo mitosis is the stratum:

The protective function of the skin is limited to the protection of the underlying tissue from abrasion and mechanical injury.

The germinal matrix is a small mound of dermis that supplies blood to the hair follicle.

The hypodermis is the deepest layer of skin.

Skin thermal receptors provide important information to the heat-regulating centers in the brain, resulting in autonomic regulation of body temperature.

A geneticist informs parents that their newborn infant does not have the enzyme tyrosinase. The lack of this enzyme will result in:

Match each term with its description or definition. -Gland that secretes oil for hair and skin

The presence of hemosiderin and bile pigments in the skin can cause the skin to appear cyanotic.

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

When the skin looks cyanotic, it is because _____ can be seen through the skin.

Match each term with its definition or description. -Skin cells that play a role in immunity

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

Both the root and the lunula of the nail are covered by the cuticle and therefore cannot be seen externally.

The time required for the completion of mitosis, differentiation, and the movement of new cells from the stratum basale to the surface of the skin is about:

Keratohyalin is a protein in the stratum lucidum that will eventually be transformed into keratin in the cells of the epidermis.