KIN 270 Lecture Notes - Lecture 10: Axon Hillock, Extracellular Fluid

• School: UMASS-Amherst
• Department: Kinesiology
• Course: KIN 270
• Professor: Jennifer Gordon

Document Summary

Induces an electrical stimulus down the axon: axon hillock: the region where the axon comes off the cell body. Resting membrane potential: when the membrane is polarized na+ channels are closed. 2/3 of the k+ channels are closed. More na+ out of the axon more k+ in the axon. Sodium potassium pump is working to maintain this balance. Axoplasym: negative charge but has potassium in it that has a positive charge. Cell body: perikaryon: fluid in the cell body of a neuron. Bundle axons to make neurons and they communicate together.