After the depolarization of postsynaptic neurolemma, neurotransmitters are mostly:
Correct answer: C. Degraded by enzymes
- A. Taken up by Schwann cells
- B. Remain in synaptic cleft
- C. Degraded by enzymes
- D. Taken up by post synaptic membrane
Explanation
Neurotransmitters that have been released into the synaptic cleft are often degraded by specific enzymes present in the cleft. Enzymes like acetylcholinesterase break down neurotransmitters like acetylcholine, terminating the signal transmission and allowing the synapse to reset for the next potential signal.
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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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