Lecture_6_NOTES

Lecture_6_NOTES - Lecture6 OnlineHandouts Lec6Notes Review...

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Lecture 6 Online Handouts: Lec 6 Notes Announcements: None Reading (Recommended): Reading: Ch 4 (Synapse) Review Synapse REV: Action Potential 1. Rapid stereotyped change in E m , which occurs in response to a stimulus. 2. There are 6 primary characteristics of an AP: a) Large regenerative increase in P Na via Positive Feedback b) Rapid repolarization of E m by slow increase in P K c) Every AP followed by 2 refractory periods d) Every AP is All or None e) AP conducted over the axon f) AP are conducted rapidly
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Synapses Junction between two neurons Primary means by which one neuron directly interacts with another neuron General Anatomy of a synapse Presynaptic neuron – conducts action potential toward synapse Synaptic knob–contains synaptic vesicles Synaptic vesicles–stores neurotransmitter (carries signal across a synapse) Synaptic cleft –space between the presynaptic and postsynaptic neurons Postsynaptic neuron –neuron whose action potentials are propagated away from the synapse General Synapse Fig. 4 15, pg. 105
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Synapse Physiology Synaptic transmission Process of conversion of electrical AP information
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Lecture_6_NOTES - Lecture6 OnlineHandouts Lec6Notes Review...

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