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Module 2e - A&P
Introduction to the Human Body
| Question | Answer |
|---|---|
| hair | important functions: eyelashes and eyebrowe protect the eyes from dust and perspiration |
| nasal hairs trap dust and prevent it from being inhaled into the lungs | |
| hair of the scalp helps heep us warm and plays cosmetic role | |
| hair growth | influenced by the sex hormones estrogen and testosterone |
| parts of hair | shaft:the part above the surface of the skin |
| root: part that extends from the dermis to the surface | |
| hair color | genetically controlled and is determined by the type and amount of melanin |
| arrector piili muscles | attached to the hair follicle is a bundle of smooth muscle cells |
| alopecia | loss of hair genetic or drug re;ated |
| nails | are thin plates of stratified squamous epithelial cells that contain a very hard form of keratin |
| protect fingers and toes from injury | |
| each nail has the following: free edge, nail body (fingernail), and nail root,lunula, and cuticle | |
| nail clubbing | chronic lung and heart disease, insufficent supply of oxygenated blood over a period of time |
| not pink | poor oxygenated blood makes nail bluish |
| nail abuse | trauma to nail, causes nail to thick or hypertropy |
| brittle | generally due to poorly oxygenated blood and nutritional anemias |
Created by:
janmaire
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