A&P Ch. 5 The Integumentary System

Skin and its derivatives; provides the external protective covering of the body.

Subcutaneous tissue just deep to the skin; consists of adipose plus some areolar connective tissue.

Fibrous protein found in the epidermis, hair, and nails that makes those structures hard and water resistant; keratohyaline.  Greek kera = horn

Dark pigment formed by cells called melanocytes; imparts colors to skin and hair.  Melan = black

Layer of skin deep to the epidermis; composed mostly of dense irregular connective tissue. derm = skin

small, nipple-like projection; e.g., dermal papillae are projections of dermal tissue into the epidermis. papill = nipple

Yellow to orange pigment that accumulates in the stratum corneum epidermal layer and in fatty tissue of the hypodermis.

Oxygen-transporting protein of erythrocytes.

Epidermal gland that produces sweat. sudor = sweat

Sweat glands abundant on the palms, soles of feet and the forehead.  ek'rin; "secreting"

Glands that produce secretions intermittently; secretions do not accumulate in the gland.

The less numerous type of sweat gland; produces a secretion containing water, salts, proteins, and fatty acids.

Milk-producing glands of the breast.

Epidermal glands that produce an oily secretion called sebum.  se-ba'shus; "greasy"

Oily secretion of sebaceous glands.

Structure with outer and inner root sheaths extending from the epidermal surface into the dermis and from which new hair develops.  folli = bag

Tiny, smooth muscles attached to hair follicles; contraction causes the hair to stand upright.  ah-rek'tor pi'li; "rise of hair"

Baldness.

Receptors located throughout the skin that respond to stimuli arising outside the body; part of the nervous system.