Biological Aspects of Behavior-2

Biological Aspects of Behavior-2 - B iological Aspects of...

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Biological Aspects of Behavior I. Neurons (nerve cells) A. Functions- send and receive messages B. Parts* 1. Soma (cell body)= The main body for neuron 2. Axon =carries neuron’s message to other body cells; release message 3. Dendrites = little branches that come our of cell body; at end has little receptor sites where they receive messages 3 kinds of neurons: 1. S ensory - get info from outside world and brings it to us (5 senses) 2. Motor - take info from brain and spinal cord and give info to our muscles 3. Interneuron -most of these; connect neurons to other neurons; a bundle of these in your brain that help you plan(what to eat, walk, etc.) II. How neurons communicate A. Electrical* -ions =electrically charged atoms; positive or negative charge -resting potential=when neuron is at rest it has a slightly negative charge - action potential= a sudden change from negative to a positive charge B. Chemical - synapse =electrical charge comes down and causes a release and floats around in the synapse and some will
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This note was uploaded on 04/10/2011 for the course PSYCH 101 taught by Professor Sabin during the Spring '09 term at Saint Louis.

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Biological Aspects of Behavior-2 - B iological Aspects of...

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