Adipose tissue is fat-storing tissue (body fat).

Arrector pili muscles are the small muscles attached to hair follicles. They can pull the hair straight up: goose bumps.

Arterioles are the small blood vessels that branche out from arteries and lead to capillaries.

Dermal papillae are the nipple-like extensions of the dermis into the epidermis.

Dermis is the thick layer of the skin beneath the epidermis.

Epidermis is the outer layer of the skin.

The hair bulb is the bottom part of a hair where growth occurs.

The hair bulge is the region near the hair follicle where the stem cells originate.

A hair follicle is a sac-shaped structure in the epidermis in which a hair develops from a group of stem cells.

The hair root is the part of a hair that lies below the surface of the skin. It is anchored in the hair follicle.

The hair shaft is the visible part of the hair that sticks out of the skin.

Merocrine sweat glands secrete sweat to control body temperature.

Nerves are connected to each hair bulb. They turn hairs into sensitive touch receptors.

Sebaceous glands are connected to hair follicles. They secrete an oily matter (sebum) which lubricates the hair and skin.

The subcutaneous layer lies beneath the skin. It consists primarily of adipose and connective tissue.

Tactile corpuscles are the nerve endings in the dermis that sense pain, touch, pressure and temperature.

Venules are the small blood vessels that drain blood from the capillaries into larger veins.