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January 25, 2007
Action potential: changes in ionic permeability
Fig 8.13, 8.15, 8.19, 8.17, 8.5, 8.20
Saltatory conduction
Fig 8.4?
Around 10 times faster than unmyelinated
Myelin sheath
Fig 8.5
Neuron synapses
Fig 9.1
Anatomy of a synapse
Fig 9.2
Axon terminal has a large number of vesicles, trans-membrane proteins, voltage gated Ca
channels.
[Ca] high outside, low inside of a neuron.
Removal from axon:
1.
Enzymatic
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Unformatted text preview: 2. Uptake 3. Diffusion Neuromuscular junction Fig 12.14, 12.15 Fast excitatory synapse Fig 9.4a Neuronal convergence Fig 9.7 Threshold good Neuron receives positive or negative signals, which sum up and that determines whether a signal will occur Temporal summation Fig 9.8a,b At some inhibitory synapses Cl- channels act as shunts Fig 9.6 Pre-synaptic facilitation Fig 9.9...
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- Spring '08
- Merrill
- Fig, myelin sheath, saltatory conduction
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