Ch. 6 Integumentary Text book pdf

Integumentary System

The system that includes the skin and its accessory structures, such as hair and nails.

Melanin

A dark pigment produced by melanocytes that provides color to the skin and protects against UV radiation.

Epidermis

The outer layer of the skin composed of stratified squamous epithelium.

Dermis

The inner layer of the skin made up of connective tissue containing collagen and elastic fibers.

Sebaceous glands

Glands associated with hair follicles that secrete sebum, responsible for keeping skin and hair soft and waterproof.

Sweat glands

Glands that help regulate body temperature through the secretion of sweat.

Hair follicle

A tubelike depression in the skin where hair develops.

Keratinization

The process by which epidermal cells undergo a hardening process involving keratin as they move toward the skin surface.

Homeostasis

The process of maintaining a stable internal environment in the body.

Hypodermis

The layer beneath the dermis, consisting of loose connective and adipose tissues, which helps insulate the body.

Stratum corneum

The outermost layer of the epidermis, composed of many layers of dead, flattened keratinized cells.

Apocrine sweat glands

Sweat glands that activate during emotional stress and are associated with hair follicles, producing a scent.

Eccrine sweat glands

The most abundant sweat glands that respond to body temperature and are located widely across the skin.

Pressure ulcers

Injuries to the skin and underlying tissues resulting from prolonged pressure, commonly seen in bedridden patients.

Aging changes in skin

Changes that occur over time in skin appearance, elasticity, and ability to regulate temperature, including thinning and increased wrinkling.

Hyperthermia

A condition characterized by an abnormally high body temperature.

Hypothermia

A condition in which the body temperature drops excessively, leading to potential health risks.

Healing process

The series of events that occur to repair tissue after injury, including inflammation, clot formation, and tissue regeneration.

Dermal papillae

Small, cone-shaped structures that project into the epidermis and contribute to fingerprints.

Granulation tissue

New connective tissue that forms during the healing process, consisting of blood vessels and fibroblasts.