Physiology 1021 Study Guide - Quiz Guide: Cochlear Duct, Hydrostatics, Dysarthria

• School: Western University
• Department: Physiology
• Course: Physiology 1021
• Professor: Prof

Document Summary

Body fluid components: total body water (tbw) 42l. Intracellular 28l (67% twb: extracellular 14l (33% tbw) Interstitial 11l (26. 4% tbw: plasma 3l (6. 6% tbw) Function of membrane proteins: receptors, enzymes, membrane carriers (transport of glucose) Membrane transport: endocytosis, exocytosis, diffusion through lipid bilayer (fat-soluble molecules, diffusion through protein channels (water-soluble molecules, active transport. Simple diffusion: the movement of molecules from high concentration to low concentration down the concentration gradient due to the molecules random thermal motion. Factors influencing rate of diffusion: concentration gradient (larger faster, temperature (higher - faster) Size of molecule (smaller faster: viscosity (lower faster) Osmosis: the net movement of water down its concentration gradient due to random thermal motion (water between 2 solutions, osmosis across the cell membrane is affected by: Chemical and electrical gradients: molecules tend to move from areas where they are in high concentration to areas of low concentration they move down their concentration gradient.