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integumentary 1
definitions
| Question | Answer |
|---|---|
| integumentary system | or skin has been called both a membrane, b/c it covers the body, and an organ, because it contains several kinds of tissue |
| epidermis | the outermost layer of skin |
| dermis | this layer has a framework of elastic connective tissue and contains blood vessel,lymphvessels,nerves,involuntary muscle,sweat and oil glands, and hair follicles. |
| subcutaneous fascia | the innermost layer.it is made of elastic and fibrous connective tissue and adipose(fatty) tissue and connects the skin to underly muscles. |
| sudoriferous glands | (sweet gland) are coiled tubes that extend through the dermis and open on the surface of the skin at pores. |
| sebaceous glands | are oil glands that usually open onto hair follicles |
| dilate | enlarge or expand to make bigger |
| alopecia | baldness |
| constrict | to contact or narrow tomake larger |
| albino | a person with an absence of color pigmentsskin has a pinkish tint and the hair is pale yellow or white |
| erythema | is a reddish color of the skin that can causedby either burnsor a congestion of blood in the vessel |
| jaundice | a yellow discoloration of thr skin can indicate bile in the blood as a result of liver or gallbladder disease |
| cyanosis | is a blush discoloration of the skin caused by insufficient oxygen |
| macules | flat spots on the skin such as freckles |
| papules | firm raised areas such as pimples and the eruptions seen in some stages of chicken pox and syphilis |
| vesicles | blisters or fluidfilled sacs such as those seen in chicken pox |
| pustules | pus-filled sacs such as those seen in acne or pimples |
| crusts | areas of dried pus and blood commonly callled "scabs" |
| wheals | itchy elevated areas with an irregular shape hives and insect bites are examples |
| ulcer | a deep loss of skin surface that may extend into the dermis may cause periodic bleeding and the formation of scars |