Polle WKST 34-1_F_polle

Polle WKST 34-1_F_polle - Comparative Physiology: Bio 34.1...

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Page 1 of 1 Comparative Physiology: Bio 34.1 / J. Polle Last 4 digits of SSN: __________ Last Name: ________________________ Group #: __________ First Name: ________________________ Pre-Class Assignment Module F: Membrane Potentials, Action Potential, Progagation of Potentials Prepare for the next class by reading Chapter 7 in your reader and completing this assignment. Give a definition or brief description for each of the following terms: Note: You should find the appropriate definition in the reader. If the reader does not provide a definition, you have to describe the term in your own words. 1. membrane potential 2. resting membrane potential 3. graded potential 4. action potional 5. ion channel 6. hyperpolarization 7. depolarization 8. repolarization 9. ligand 10. refractory period
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Comparative Physiology: Bio 34.1 / J. Polle, 2007 F-1 Module F: Membrane Potentials, Action Potential, Propogation of Potentials Electric properties of cells result from charge distribution across cellular membranes. The ‘membrane potential’ is the electrical potential difference (voltage) across a biological membrane. In consequence, every membrane within a cell may have an electrical potential. However, sometimes the size of this potential can be zero. Changes in charge distribution across a membrane result from ion flow across membranes. Depending on the size and time scale with
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This note was uploaded on 04/08/2008 for the course CHEM 1.1 taught by Professor Ciszkowska during the Spring '08 term at CUNY Brooklyn.

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Polle WKST 34-1_F_polle - Comparative Physiology: Bio 34.1...

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