Integumentary Function Flashcards
The innermost layer of the skin. It is composed of soft, fatty tissue as well as blood vessels, nerves, and immune cells. Also called subcutaneous tissue
Hypodermis
The middle layer of the skin, which is composed of dense, irregular connective tissue and little fat tissue. Includes nerves, hair follicles, smooth muscle, glands, blood vessels, and lymphatic vessels
Dermis
The outermost layer of the skin, which is composed of squamous epithelia
Epidermis
A protein that strengthens skin
Keratin
A pigment that provides color to the skin as well as protection from ultraviolet rays. Disorders involving this result in alterations in skin coloring and can leave the skin vulnerable to the harmful effects of UV light. Disorders include albinism and vitiligo
Melanin
A gland that produces sebum
Sebaceous gland
Secretion of the sebaceous gland that moisturizes and protects the skin
Sebum
Gland that secretes sweat through skin pores in response to the sympathetic nervous system. Also called merocrine gland
Eccrine gland
Gland that opens into hair follicles in the axillae, scalp, face, and external genitalia
Apocrine gland
A skin anomaly that is present at birth or shortly after
Birthmark
Birthmark that consists of blood vessels that have not formed correctly; therefore, there birthmarks are generally red
Vascular birthmark
The most common type of vascular birthmark. These faint red marks often occur on the forehead, eyelids, posterior neck, nose, upper lip, or posterior head. Also called salmon patch, angel kiss, and stork bite
Macular stain
A vascular birthmark that appears as a bright red patch or a nodule of extra blood vessels in the skin. Also called a strawberry
Hemangioma
Vascular birthmark that looks like wine was spilled on an area of the body. These birthmarks most often occur on the face, neck, arms, and legs
Port-wine stain
A birthmark made of a cluster of pigment cells, which cause color in skin. These birthmarks can be many different colors, from tan to brown, gray to black, or even blue
Pigmented birthmark
Common type of birthmark that is the color of coffee with milk
Cafe au lait spot
Type of birthmark that is a flat bluish-gray area often found on the lower back or buttocks. These birthmarks are most common on individuals with darker complexions
Mongolian spot
A brown nevus. Can be tan, brown, or black; can be flat or raised; and may have hair growth
Mole
A recessive condition that results in little or no melanin production
Albinism
A rare condition characterized by small patchy areas of hypopigmentation. Occurs when the cells that produce melanin die or no longer form melanin, leading to slowly enlarging white patches of irregular shapes on the skin
Vitiligo
A large pigmented spot that may appear in a sun-exposed area. Also called age spot or liver spot
Lentigo
A benign soft brown or flesh-colored growth, usually on the neck
Skin tag
An acute inflammatory reaction triggered by direct exposure to an irritant or allergen-producing substance
Contact dermatitis
A chronic inflammatory skin condition triggered by an allergen
Atopic dermatitis (eczema)
Raised erythematous skin lesions that are a result of a type I hypersensitivity reaction. Also called hives
Urticaria
A raised erythematous skin lesion
Welt
A common chronic inflammatory condition that affects the life cycle of the skin cells
Psoriasis
A small, red elevated area of the skin
Papule
Infections involving the hair follicles. Characterized by tender, swollen areas that form around hair follicles, often on the neck, breasts, buttocks, and face
Folliculitis