What is the fate of neurotransmitters after provoking an impulse in the postsynaptic membrane?
Correct answer: C. Degraded by enzyme
- A. Stay in the synaptic cleft indefinitely
- B. Recycled in the synaptic cleft
- C. Degraded by enzyme
- D. Taken up by the postsynaptic membrane
Explanation
After transmitting the nerve impulse, the neurotransmitters are degraded by enzymes. For example, acetylcholine is degraded by acetylcholinesterase.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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