Which one of the following do we know to be true about inhibitory neurotransmitters?
Correct answer: D. Increasing the cell's negativity is called hyperpolarization
- A. Inhibitory neurotransmitters increase the excitability of a cell
- B. The classic inhibitory neurotransmitter is glutamate
- C. Increasing chloride ion flow into the interior of the cell decreases the cell's negativity
- D. Increasing the cell's negativity is called hyperpolarization
Explanation
An increase in a cell's negativity is called hyperpolarization and makes firing less likely. Glutamate is typically excitatory, and increased chloride entry generally makes the membrane more negative rather than less negative.
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