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med term ch 5A.2
| Question | Answer |
|---|---|
| androgen | generic term for an agent that stimulates development of male characteristics |
| ductule | very small duct |
| homeostasis | state of equilibrium of the internal environment despite changes in the external environment |
| synthesize | forming a complex substance by the union of simpler compounds or elements |
| integument | the skin |
| integumentary system | the skin, includes glands that produce several types of secretions, nerves that transmit impulses, and blood vessels that help regulate body temperature |
| epidermis | the outer layer of skin (1) |
| strata | several sublayers |
| stratum corneum | a layer (2) |
| basal layer | the deepest layer (3) |
| keratin | hard protein material in dead cells |
| melanocytes | in the basal layer, produce a black pigment called melanin |
| melanin | provides a protective layer from the damaging effects of the sun |
| albino | an individual with the inability to produce melanin, marked by deficiency of pigment in the eyes, hair, and skin |
| dermis | (4) also called corium, lies directly beneath the epidermis |
| sebaceous | oil glands (7) |
| sudoriferous | sweat glands (6) |
| subcutaneous layer | binds the dermis to the underlying structures (5) [hypodermis] |
| adipose | fat |
| exocrine | secrete substances through ducts to an outer surface of the body |
| axillae | armpits |
| sebum | helps destroy harmful organisms on the skin |
| hair shaft | (8) visible part of the hair |
| hair follicle | (9) the root and it coverings |
| papilla | (10) the covering enclosing the loop of capillaries |
| alopecia | baldness |
| nail root | (1) composed of keratinized, stratified, squamous epithelial cells that form a very tough covering |
| nailbed | (2) layer of epithelium that the nail grows over |
| nail body | (3) the actual nail you see |
| lunula | (4) region where new growth occurs |