Ch. 7.3 Integumentary System Key Terms
What is albino?
a congenital disorder characterized by the complete or partial absence of melanin pigment in the skin, hair, and eyes.
What is a cyst?
A closed sac or pocket that contains liquid or semi-solid material.
What is hypodermis?
Also known as the subcutaneous layer. It is the layer beneath the dermis, primarily composed of fat for insulation and cushioning.
What are papules?
Small, solid, elevated lesions on the skin that are less than 1 cm in diameter
What is the ulcer?
An open sore or lesion on the skin or mucous membrane that is accompanied by sloughing off of inflamed necrotic tissue.
What is alopecia?
Baldness
What is dermis?
The middle layer of the skin, which contains blood vessels, nerves, hair follicles, and glands.
What is the integumentary system?
The body system that includes the skin, hair, nails, and associated glands (sweat and oil). Its primary function is protection.
What are pustules?
Small, elevated, circumscribed lesions that contain pus
What are vesicles?
Small, elevated blisters or sacs containing liquid
What is constrict?
To make a blood vessel narrower, which decreases blood flow.
What is dilate?
To make a blood vessel wider, which increases blood flow.
What is jaundice?
A yellowish discoloration of the skin and whites of the eyes caused by a buildup of bilirubin in the blood, often signaling liver or gallbladder issues.
What are sebaceous glands?
Small glands in the skin that secrete an oily, waxy matter called sebum to lubricate and waterproof the skin and hair.
What are wheals?
Itchy, temporary, elevated areas with an irregular shape, often caused by an allergic reaction; commonly called hives.
What are crusts?
Dried masses of fluid or pus, often called a scab
What is epidermis?
The outermost layer of the skin. It acts as a protective, waterproof barrier and is constantly shedding dead cells.
Flat, discolored spots on the skin that are less than 1 cm in diameter
What is subcutaneous?
beneath the skin
What is cyanosis?
A bluish or grayish discoloration of the skin, nails, or lips due to a lack of oxygen in the blood.
What is erythema?
A redness of the skin, often caused by inflammation due to engorged capillaries.
What is melanin
The pigment that determines the color of the skin, hair, and eyes.
What are sudoriferous glands?
Sweat glands