Exam 7: A: Skin and Its Appendages

Chemicals that cause the body to develop a fever are called pyrogens.

A person who is shivering would normally have dilated surface blood vessels in the skin.

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

An increase in the enzyme tyrosinase will lead to the destruction of pigment and result in albinism.

Sweat that drips off you does very little to cool your body.

A high level of melanin in the skin assists in the formation of vitamin D.

Keratinocytes are sometimes called corneocytes.

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

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

The thickest part of the skin is slightly more than 3 cm thick.

An abnormal thickening of the stratum corneum is called hyperkeratosis.

The papillary layer of the dermis lies just below the dermal-epidermal junction.

Heat loss by the skin is controlled by a negative feedback loop.

The cells at the surface of the skin are dead.

Heat production occurs in two ways: metabolism of food and absorption of heat from the environment.

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

The ability of melanocytes to darken the skin is dependent on the functioning of the enzyme tyrosinase.

The hypodermis is the deepest layer of skin.

Integument and integumentary system are interchangeable terms.

You turn red when you blush because the color of blood is red.