Membrane Potential

Membrane Potential - 4. Describe the channels that...

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Membrane Potential, and Action Potential (Chapter 7)– Objectives and Study Guide Overall aim : To achieve a fundamental understanding of i. the biological basis of the membrane potential ii. the transmission of electrical signals down axons, which result in the release of a neurotransmitter. Specific objectives: 1. Define the electrochemical gradient a. Know the relative concentration differences between the ECF and the ICF b. Describe the origins of the resting membrane potential c. Be able to use the Nernst equation (the equation would be given to you in exams) 2. Define b. glial cells, c. neurons, d. excitable cells, e. cell soma, f. dendrite, g. axon hillock, h. postsynaptic dendrite, i. presynaptic terminal j. synaptic cleft k. vesicle 3. Describe a. a graded potential, b. an action potential
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c. the differences between an AP and a GP
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Unformatted text preview: 4. Describe the channels that contribute to the generation of graded potentials and action potentials, respectively 5. Describe what limits the amplitude and the hyperpolarization base point of the action potential 6. Define i. hyperpolarization, ii. depolarization, iii. voltage-gated Na+ channel, iv. voltage gated K + channel, v. hyperkalemia, vi. hypokalemia, vii. absolute refractory period, viii. relative refractory period ix. spatial summation x. temporal summation xi. frequency coding 7. Describe the effects of potassium in the ECF on the generation of action potentials. 8. Describe the opening and closing of the gates of the voltage-gated Na + channel 9. Describe saltatory conduction 10. Know why myelination is essential in large vertebrates 11. Know the role of Ca ++ and voltage-gated Ca ++ channels in secretion...
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This note was uploaded on 10/15/2010 for the course ZOO 3115 taught by Professor Flanigan during the Spring '10 term at Wyoming.

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Membrane Potential - 4. Describe the channels that...

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