What is the fate of neurotransmitters after provoking impulse in postsynaptic membrane?
Correct answer: C. Degraded by enzyme
- A. Stay in synaptic cleft indefinitely
- B. Recycled in synaptic cleft
- C. Degraded by enzyme
- D. Taken up by postsynaptic membrane
Explanation
After transmitting the nerve impulse, the neurotrasmitters are degraded by enzymes. For example, acetylcholine is degraded by acetylcholinesterase.
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About Neurons and Nerve Impulse
Neurons receive and transmit information through dendrites, the cell body and axons. The topic explains resting potential, depolarization, repolarization, refractory periods and saltatory conduction, followed by synaptic transmission through neurotransmitters. An action potential is distinct from the graded potential produced at a receptor.
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