NERVOUS SYSTEM WORKSHEET MATCHING I. Match the proper ion (Nat or K ) to the sta

Question

NERVOUS SYSTEM WORKSHEET MATCHING I. Match the proper ion (Nat or K ) to the statement. 1. Concentrated intracellularly 2. At rest, a few ilgates are open 3. At rest, almost all of the gates are closed 4· gates open completely when threshold is reached 5. Opening of gates occurs during repolarization 6. Neuron membrane is more permeable to this ion 7. Na+/K+ pump is more effective at pumping this ion 8. The Na+/K+ pump moves this ion out of the cell 9. Hyperpolarization occurs when these gates open 10. An EPSP results when these gates open

Explanation / Answer

1. K+ concentrated intracellularly.

2. At rest, few K+ channels open.

3. At rest, almost all of the Na+ channels closed.

4. Na+ gates open when threshold is reached.

5. Opening of K+ gates occurs during repolarization.

6. K+

7. Na+

8. K+

9. Na+

10. Na+

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