Chapter 07 Key Terms Jeopardy
A raised, itchy, reddish-pink area on the skin, often temporary, caused by fluid leakage from blood vessels into the superficial dermis. Commonly known as hives or a welt.
Wheals
Small glands in the skin that secrete an oily, waxy matter called sebum into the hair follicles to lubricate the hair and skin
Sebaceous Glands
A condition where the skin and the whites of the eyes (sclera) turn yellowish due to an excessive accumulation of bile in the blood
Jaundice
To become or make wider or larger. In blood vessels, vasodilation means the blood vessel diameter increases, increasing blood flow
Dilate
To become or make narrow, tightened, or smaller. In blood vessels, vasoconstriction means the blood vessel diameter decreases, reducing blood flow.
Constrict
A small blister or sac, typically less than 5 millimeters in diameter, containing clear fluid. Examples include the blisters caused by herpes or shingles
Vesicles
A small, elevated blister or bump on the skin that contains pus, typically caused by bacterial infection or inflammation. Examples include acne pimples
Pustules
The skin
Integumentary System
The layer of skin directly beneath the epidermis. It contains connective tissue, blood vessels, nerve endings, hair follicles, sweat glands, and sebaceous glands
Dermis
hair loss or baldness
Alopecia
An open sore on an external or internal surface of the body, caused by a break in the skin or mucous membrane that fails to heal
Ulcer
A small, raised, solid bump on the skin that does not contain pus. Examples include the lesions in chickenpox or some moles
Papules
Another name for the subcutaneous layer. It lies beneath the dermis and is primarily composed of connective tissue and adipose (fat) tissue
Hypodermis
A closed sac or pouch, with a distinct membrane lining, that develops abnormally in a body structure or tissue and usually contains fluid, semi-solid, or gaseous material
Cyst
An individual with albinism, a group of inherited disorders characterized by little or no production of the color pigments. This results in light-colored skin, hair, and eyes, and often involves vision problems
Albino
Glands in the skin that secrete sweat (perspiration); commonly known as sweat glands. They help regulate body temperature
Sudoriferous Glands
A dark brown, black, or yellowish-brown pigment produced by specialized cells (melanocytes) in the epidermis. It is responsible for the color of skin, hair, and eyes, and provides protection against UV radiation
Melanin
Redness of the skin, often in patches, caused by hyperemia (increased blood flow) in the capillaries beneath the skin surface
Erythema
A bluish or purplish discoloration of the skin and mucous membranes due to a lack of oxygen in the blood
Cyanosis
Situated or occurring beneath the skin. Often used to describe the deepest layer of skin (the hypodermis) or injections made into this layer
Subcutaneous
A small, flat spot or discoloration on the skin that is neither raised nor depressed. Examples include freckles or the spots in a rash
Macules
The outermost layer of the skin. It is thin, avascular (lacks blood vessels), and provides a protective barrier
Epidermis
A mass of dried serum, blood, or pus over the surface of a damaged or broken area of skin; commonly called a scab
Crusts