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sci 221 week 1-6 HP.

FLASH covering key pysiology reviews

QuestionAnswer
Homeostasis the body ability to maintain a stable internal environment despite external changes
term Negative feedback A mechanism that reverses a deviation from the set point to maintain homeostasis
positive feedback a process that amplifies a change in the body condition such as during childbirth or blood clotting
cell membranes a selective barrier that controls what enters and leaves the cell
diffusion the movement of molecules from an area of high concentration to an area or low concentration
osmosis the movement of water across a semipermeable membrane toward higher solute concentration
apt adenosine triphosphate the main energy currency of the cell produced by cellular respiration in the mitochondria
neuron a nerve cell that transmits electrical impulse throughout the body
cardiovascular system the systems that transport blood nutrients oxygen and hormones throughout
respiratory system responsible for gas exchange bringing oxygen into the body and removing carbon dioxide
Created by: Gladysb1
 

 



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