INTEGUMENTARY SYSTEM

Flashcards covering key terms and definitions related to the Integumentary System.

Integumentary System

The organ system that protects the body from various kinds of damage, including loss of water, against UV radiation, and infections.

Epidermis

The top layer of the skin composed of stratified squamous epithelial tissue.

Dermis

The layer of skin beneath the epidermis that contains nerves, blood vessels, and connective tissue.

Hypodermis

Also known as the subcutaneous layer; composed of loose, fatty connective tissue that connects the skin to muscle or bone.

Melanocytes

Spider-shaped epithelial cells found in the bottom layers of the epidermis that produce the pigment melanin.

Melanin

A pigment produced by melanocytes that protects the skin against harmful UV rays.

Sudoriferous Glands

Sweat glands responsible for the secretion of sweat.

Sebaceous Glands

Oil glands that produce sebum to lubricate skin and hair.

Keratin

A protein that makes up hair and nails, providing strength and protection.

Lines of Cleavage

Tension lines in the skin that are important for surgical procedures to ensure quicker healing.

Decubitus Ulcers

Also known as bedsores, formed when blood supply to the skin is restricted for a prolonged time.

Nail Matrix

The area where new nail cells are produced, leading to nail growth.

Apocrine Sweat Glands

Sweat glands located primarily in the armpits and genital areas, producing sweat that can cause body odor.

Eccrine Sweat Glands

Merocrine sweat glands that are abundant and often found on the palms, soles of feet, and forehead.

Dermal Papillae

Wavy boundary layer between the epidermis and dermis responsible for fingerprints.

4. Stratum Basale

 The basal layer of the epidermis where cells are constantly dividing.

1. Stratum Corneum

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

2. Stratum Lucidum

A thin layer of translucent cells found only in thick skin, such as palms and soles.

3. Stratum Granulosum

The layer of the epidermis where cells begin to flatten and accumulate keratin granules.

Basal Cell Carcinoma

Skin cancer arising from uncontrolled division of cells in the stratum basale.

Squamous Cell Carcinoma

Skin cancer resulting from uncontrolled division of cells in the stratum spinosum.

Melanoma

A serious form of skin cancer characterized by uncontrolled division of melanocytes.