Anatomy & PhysiologyChapter 4 Vocab

The skin; membrane composed of epidermal and dermal layers.

Cutaneous Membrane

Tiny, smooth muscles attached to hair follicles; cause the hair to stand upright when activated

Arrector Pili

Oily secretion of sebaceous glands.

Sebum

Lesion or erosion of the mucous membrane, such as gastric lining of stomach.

Ulcer

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

Integumentary System

A layer.

Stratum

Dark pigment formed by cells called melanocytes; imparts color to skin and hair.

Melanin

Water-soluble protein found in the epidermis, hair, and nails that makes those structures hard and water-repellent

Keratin

A cell that produces melanin

Melanocyte

An inflammation of the skin; nonspecific skin allergies

Dermatitis

Superficial layer of the skin; composed of keratinized stratified squamous epithelium.

Epidermis

Epidermal glands that produce an oily secretion called sebum.

Sebaceous Gland

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

Apocrine Gland

Membranes that form the linings of body cavities open to the exterior (digestive, respiratory, urinary, and reproductive tracts).

Mucous Membrane

Beneath the skin.

Subcutaneous

Layer of skin deep to the epidermis; composed of dense irregular tissue.

Dermis

Serous membrane lining the interior of the abdominal cavity and covering the surfaces of abdominal organs.

Peritoneum

Inflammatory disease of the skin; infection of the sebaceous glands.

Acne

pertaining to flat, thin cells that form the free surface of some epithelial tissues

Squamous

Life threatening; pertains to neoplasms that spread and lead to death, such as cancer.

Malignant

Oily secretion of sebaceous glands.

Sebum

Two-layered serous membrane that lines the thoracic cavity and covers the external surface of the lung.

Pleura

Oil Gland

Sebaceous Gland

Glands that have ducts through which their secretions are carried to a particular site.

Exocrine

Clear, watery fluid secreted by cells of a serous membrane.

Serous Fluid

Sweat Gland

Sudoriferous Gland

Membrane that lines a cavity without an opening to the outside of the body

Serous Membrane

keeps the free surface of membranes moist

Mucus

Overzealous immune response to an otherwise harmless antigen

Allergy