| Term | Definition |
|---|
| albino | a person with an absence of color pigments |
| alopecia | baldness, permanent loss of hair on the scalp |
| constrict | when blood vessels get smaller |
| crusts | areas of dried pus and blood, commonly called "scabs" |
| cyanosis | a bluish discoloration of the skin caused by insufficient oxygen |
| dermis | also called corium, or "true skin"; layer of skin below the epidermis that contains blood vessels, lymph vessels, nerves, involuntary muscles, sweat and oil glands, hair follicles |
| dilate | when blood vessels get larger |
| epidermis | outermost layer of skin |
| erythema | a reddish color of the skin that can be caused by either burns or a congestion of blood in the vessels |
| integumentary system | skin; has been called both a membrane, because it covers the body, and an organ, because it contains several kinds of tissues |
| jaundice | a yellow discoloration of the skin, can indicate bile in the blood as a result of liver or gallbladder disease |
| macules | (macular rash) flat spots on the skin, such as freckles |
| papules | (papular rash) firm, raised areas such as pimples and the eruptions seen in some stages of chickenpox and syphilis |
| pustules | pus-filled sacs such as those seen in acne, or pimples |
| sebaceous glands | oil glands that usually open onto hair follicles |
| subcutaneous fascia | (hypodermis) the innermost layer of skin |
| sudoriferous glands | (sweat glands) are coiled tubes that extend through the dermis and open on the surface of the skin at pores |
| ulcer | a deep loss skin surface that may extend into the dermis; may cause periodic bleeding and the formation of scars |
| vesicles | blisters, or fluid-filled sacs, such as those seen in chickenpox |
| wheals | itchy, elevated areas with an irregular shape; hives and insect bites are examples |
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