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Question

Receptor sites for neurotransmitters are present on

A
membranes of synaptic vesicles
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B
pre-synaptic membrane
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C
tips of axons
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D
post-synaptic membrane
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Solution

The correct option is D post-synaptic membrane
Synapses are the junctions between two or more neurons where impulses pass from one neuron to others.

A presynaptic neuron is a neuron from which information passes through the synapse and the neuron which receives the information is the postsynaptic neuron.

The space between the presynaptic and postsynaptic membrane is called the synaptic cleft.

The terminal of presynaptic neurons usually ends in a small bulbous enlargement called the synaptic knob. This knob contains numerous synaptic vesicles that contain neurotransmitters like acetylcholine, gamma-
aminobutyric acid, etc.

Neurotransmitters are chemicals involved in the transmission of impulses at the synapses.

These neurotransmitters bind to specific sites called receptors which are present on the post-synaptic membrane.


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