Outline 32 2008 Synapses

Outline 32 2008 Synapses - Lecture 32 SYNAPSES Summary...

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Lecture 32: SYNAPSES Summary . After an action potential has propagated down the axon of a neuron and invades the axon terminal, the signal must cross a synapse if it is to influence the cells that the neuron contacts. Synapses are the areas of contact between nerve cells and other nerve cells, or between nerve cells and muscles or glands. Synapses are either electrical and very fast or chemical and relatively slower. Chemical synapses are critical for integration of information. Some are excitatory, some inhibitory, some modulate the activity of other synapses. Some play a role in learning and may function in storage of memory. Reading Assignment Campbell, N. A. and Reece, J. B. (2008). Chapter 48 (1056-1063). Supplemental readings: These are two papers that I mentioned in class about newts that have TTX in their skin as a defensive adaptation against vertebrate predators. Several populations of newt-eating garter snakes in California have evolved just a few amino acid changes in their voltage-gated sodium channels such that the channels are now resistant
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This note was uploaded on 09/13/2009 for the course BIO 1110 taught by Professor Randywayne during the Fall '09 term at Cornell.

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Outline 32 2008 Synapses - Lecture 32 SYNAPSES Summary...

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