BIOL 361 Study Guide - Axon Hillock
Document Summary
+neurons:k+ channels open when mem depolarizes)-mechanogated channel-regulated by interactions w/ subcellular proteins that make up the cytoskeleton(chnge in cell shape-swelling,chnge arrangement of the cytoskeleton-> mechanogated channel open/close)-porins-large channels(sim. to ion channels,but allow larger molec. [k];ca2+ atpase),f/v-type atpase(use e to pump h+;f-type in mitochondrial-operates in reverse= using h+ movemt down electrochemical gradients to make e for atp hydrolysis-v-type atpase=alows cells. Goldmaneq-used to calculate the rmp based on the []+permeability of k+,na. +movemt due to its []+electrical gradient)-electrical gradient-the difference in electrical charge (valence) across the membrane-electrochemical gradient- consist of two parts, the electrical poten and a difference in the chem [] across a membrane. !neurons: graded potential-motor neuron-type of neuron that sends signals from the cns to skeletal muscle(control animal movemt)-4 zones:1. dendrites. +cell body(soma)-signal reception[dendrites:sense incoming chem signals, convert signals to electrical signal in the form of a chnge in the mem poten. +distribute info)-depolarization-charge diff between in and out decreases.
