1-16-NeuronalComm - Neuronal Communication Neuronal...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Neuronal Communication Neuronal Communication • Structure of a Neuron Glial Cells • Neuronal Communication • The Resting Potential • Graded Potentials • Action Potentials • Synaptic Transmission Glial Cells Glia are often thought of as the support system of neurons • They serve a number of functions • Structural support • Insulation for neurons • Maintain chemical environment Types of Glial Cells: Oligodendrocytes Astrocytes
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Oligodendrocytes In the brain, oligodendrocytes provide structural support for neurons and produce the myelin sheath Astrocytes Astrocytes: – Structural support to neurons – Clean up debris – Maintain chemical environment – Form blood-brain barrier Neuronal Communication • Structure of a Neuron • Glial Cells Neuronal Communication • The Resting Potential • Graded Potentials • Action Potentials • Synaptic Transmission
Background image of page 2
3 Ion Channels • They key to neuronal communication lies in ion channels , which allow certain ions to cross the neuron’s membrane Voltage-Gated Ion Channels – The channel opens only when a certain voltage has been reached – Axon Neurotransmitter-Gated Ion Channels – The channel opens only when a particular neurotransmitter compound binds to a receptor cite on the channel The Resting Potential • The neuron’s cell membrane separates inside of cell from the extracellular environment • At rest, the inside of a neuron maintains a negative charge relative to the outside b resting potential -70 mV • Ion channels maintain different
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 05/23/2011 for the course PSYCHOLOGY 1101 taught by Professor Parks,nate during the Spring '08 term at Georgia Institute of Technology.

Page1 / 10

1-16-NeuronalComm - Neuronal Communication Neuronal...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online