NEET2026BiologyChapterActual
In a typical chemical synapse, the synaptic vesicles containing neurotransmitter molecules are characteristically located within the:
Options
- ASynaptic cleft
- BPost-synaptic membrane
- CSynaptic knob
- DSchwann cells
Correct answer
C. Synaptic knob
Step-by-step solution
In a chemical synapse, the transmission of a nerve impulse occurs from the pre-synaptic neuron to the post-synaptic neuron. The axon terminal of the pre-synaptic neuron ends in a bulb-like structure known as the synaptic knob (or terminal bouton). The synaptic knob contains numerous membrane-bound sacs called synaptic vesicles, which are filled with neurotransmitter molecules. When an action potential reaches the synaptic knob, these vesicles fuse with the pre-synaptic membrane and release their neurotransmitters i