[KINE 1P90] - Final Exam Guide - Comprehensive Notes for the exam (22 pages long!)
29 Nov 2016
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Muscle activation and motor control dendrites- reach out and make contact with nerves important part. Myelin insulates the axon and allows for faster nerve conduction. Myelin = obligodendrocytes (cells wrapped around the axon) The electrical signal that travels along the nerve is called an action potential. Potential a cell has an electrical charge inside and outside of the cell and both charges are different. Electric charge inside the cell is different than the electric charge outside the cell (electrically polarized) This is cause by a difference in the relative number of cations (+) and anions (-) in the intracellular fluid (icf) and extracellular fluid (ecf) The ions responsible for producing the membrane potential are: Passive diffusion of na+ and k+ across the plasma membrane (80%) Active transport of na+ and k+ across the membrane via the na+-k+ atpase (na+-k+ pump) (20%) **pump is an enzyme that lives on the membrane wall that works to correct the movement of.
