KIN 190 Lecture Notes - Lecture 9: Sodium-Potassium Alloy, Phospholipid, Active Transport
Document Summary
Ion leak channels: membrane potential, action potentials. Graded potentials (synaptic potentials or receptor potentials) Temporal and spatial summation some basics about cell membranes phospholipids. Na+-k+ pump (na+-k+ atpase) form of active transport (requires atp) Pumps k+ into the cell establishes an electro-chemical gradient across the cell membrane: electrical gradient: 3 na+ outside vs. 2 k+ inside. More k+ inside the cell ion channels: leak channels ion channels (leak channels): for movement of small, charged particles (ions) across the membrane integral membrane proteins selective. Cl- channels membrane potential (vm) separation of electrical charges across the membrane or: difference in the relative amount of cations (+) and anions (-) in the icf and ecf excitable tissues are able to change their membrane potential. Muscle cells membrane potential (vm) separation of electrical charges across the membrane membrane potential (vm: membrane potential depends on. Relative permeability of k+ and na: at rest, the cell membrane is:
