The neurotransmitters are secreted by the neuron from:
Correct answer: A. Axon ends
- A. Axon ends
- B. Dendrite end
- C. Nissl's granules
- D. Cell body
Explanation
Vesicles of transmitter are stored in the swollen endings of the axon and released into the synaptic cleft when the impulse arrives. Dendrites carry the receptors that detect the transmitter on the other side of the synapse, which is why they are the tempting answer. This arrangement, with release on one side and reception on the other, is exactly what makes transmission one way.
This question appeared on the UHS MDCAT 2025 paper, which you can sit online with every answer explained.
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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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