Nervous Tissue

10/27/01

Click here to start

Table of Contents

3 basic functions of nervous system

I. Central nervous system (CNS)

II. Periphral nervous system

neurilemmocytes

oligodendrocytes

membrane potential difference

1) The different concentrations of Na+ and K+ across the plasma membrane are maintained by the Na+-K+ ATPase with the expenditure of energy in the form of ATP. Membrane potential difference (PD) = -70 mV, inside negative. The membrane is polarized.

2) Activation gate (called this because when the gate is stimulated it activates or opens the channel) on the voltage-sensitive Na+ channel is closed.

refractory period

Nerve AP vs muscle AP

All-or-none principle

saltatory conduction

Nerve fiber types

Neuroeffector junctions

synaptic end bulbs

one-way impulse conduction

Excitatory transmissions

inhibitory transmissions

Neurotransmitters

Neural networks

Author: Anil Rao

Email: raoa@mscd.edu