Ch. 7.3 Integumentary System Key Terms
What is albino?
A person with an absence of color pigments.
What is alopecia?
Baldness; a permanent loss of hair on the scalp.
What is constrict?
To get smaller.
What is crusts?
Areas of dried pus and blood; commonly called "scabs."
What is cyanosis?
A bluish discoloration of the skin caused by insufficient oxygen.
What is cyst?
A closed sac with a distinct membrane that develops abnormally in a body structure; usually filled with a semisolid or liquid material.
What is dermis?
The middle layer of skin (also called corium or "true skin"); it contains blood vessels, lymph vessels, nerves, involuntary muscle, sweat and oil glands, and hair follicles.
What is dilate?
To get larger.
What is epidermis?
The outermost layer of skin.
What is erythema?
A reddish color of the skin that can be caused by either burns or a congestion of blood in the vessels.
What is hypodermis?
The innermost layer of skin (also called subcutaneous fascia).
What is integumentary system?
The skin; the largest organ of the body.
What is jaundice?
A yellow discoloration of the skin.
What is macules
Flat spots on the skin, such as freckles.
What is melanin?
A pigment that produces a black, brown, or yellow tint to the skin.
What is papules?
Firm, raised areas on the skin, such as pimples.
What is pustules?
Pus-filled sacs, such as those seen in acne or pimples.
What is sebaceous glands?
Oil glands that usually open onto hair follicles.
What is subcutaneous?
Part of subcutaneous fascia) The innermost layer of skin, made of elastic and fibrous connective tissue and adipose (fatty) tissue.
What is sudoriferous glands?
(Sweat glands); coiled tubes that extend through the dermis and open on the surface of the skin at pores.
What is ulcer?
A deep loss of skin surface that may extend into the dermis.
What is vesicles?
Blisters, or fluid-filled sacs.
What is wheals?
Itchy, elevated areas with an irregular shape, such as hives and insect bites.