Integumentary System (Identify)

Melanocytes

cells that produce melanin

Sebaceous glands (oil glands)

(oil glands) usually open onto hair follicles, produces sebum

arrector pili muscle

An involuntary muscle fiber attached to the underside & base of the hair follicle

Hypodermis (subcutaneous layer)

Deep to the dermis; not technically part of the skin; made of adipose tissue; helps insulate

dermis

Inner layer of skin

Epidermis

Outer layer of skin

Keratinocytes

The most abundant epidermal cells, they function mainly to produce keratin.

hair

outgrowth of the skin composed of keratin

hair follicle

sac within which each hair grows

sudoriferous (sweat) glands

tiny, coiled, tubular structures that emerge through pores on the skin's surface and secrete sweat