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Module 2d - A&P

Intruduction to the Human Body

skin color determined by many factors: some genetic, some physiological, and some due to disease
melanocytes deep in the epidermal layer are cells that excrete melanin
melanin stains the surrounding cells, causing them to darken the more melanin secreted the darker the skin color
albinism melanocytes completely fail to secret melanin
vitiligo this conditioninvolves loss of pigment (melanin) in certain areas of the skin causing white patches
freckles and moles examples of melanin concentrating in one area
melanoma mole that changes forming a malignant melanoma
carotene yellow pigment, usually hidden my effects of melanin
cyanosis poorly oxygenated blood
jaundiced liver disease caused a person unable to excrete a pigment called bilirubin that is then deposited in the skin
ecchymosis black and blue area; where blood has escaped blood vessels and clotted under the skin
Created by: janmaire