Chapter 2A

Two kinds of cells in nervous system

Neurons

Glial cells

Four types of neurons

sensory neurons

interneurons

Motor neurons

3 common features of neurons

extracellular fluid

Terminal buttons

What is myelin made out of

Four classes of glial cells

schwan cells (glial cell)

oligodendrocytes

astrocytes

microglia

nodes/ranvier

Saltatory Conduction

Cell body (soma)

Transcription factors

Axoplasmic transport

Resting membrane electrical potential

polarized

Sodium

Chloride

Potassium

Negatively charged proteins

Factors contributing to even distribution

Factors contributing to uneven distribution

Sodium-potassium/maintenance pump

Threshold for firing

3 stimulations that open an ion channel

What local potentials have in common

local vs action potential

what are the 3 phases of action potential

The steps of action potential

Absolute Refractory Period

Relative Refractory Period

Refractory Periods

Summary

Medial

Lateral

Dorsal

posterior

Ventral

Anterior

Horizontal plane

Sagittal Plane

Coronal Plane