What is a hair follicle? Define the root, shaft, and hair bulb of a hair. What kinds of cells are... 1 answer below »

A hair follicle is a small cavity in the skin that contains the hair root, shaft, and hair bulb. The hair root is the part of the hair that is located within the follicle and is surrounded by the hair bulb, which is the structure at the base of the follicle that contains the actively growing cells that produce the hair. The hair shaft is the visible portion of the hair that extends above the skin surface.

The cells found in a hair include the hair matrix cells, which are responsible for producing the hair shaft, as well as various other cells such as melanocytes that produce pigment for the hair color and sebaceous gland cells that produce sebum to lubricate the hair and skin.

The glands of the skin that are responsible for cooling the body are the sweat glands. Sweat glands are distributed throughout the skin and produce sweat, which evaporates to cool the body.

The glands that are involved in producing body odor are the apocrine glands. Apocrine glands are located in areas such as the armpits and groin, and they secrete a thick, oily substance that is broken down by bacteria on the skin, resulting in the characteristic odor associated with sweat.