During synaptic transmission across a chemical synapse, what would happen if you

Question

During synaptic transmission across a chemical synapse, what would happen if you inject a calcium chelator (that binds calcium and prevent it from interaction with other molecules) into the post-synaptic neuron?

A. Synaptic transmission will be enhanced because many vesicles will fuse with the membrane.

B. Synaptic transmission will be blocked because the ligand-gated sodium channels will not open.

C. Synaptic transmission will be blocked because the vesicles containing neurotransmitter will not fuse with the membrane.

D. Synaptic transmission will not be affected.

Explanation / Answer

Ans

A) Vesicle need calcium to fuse with membrane,so incorrect

B) Voltage gated calcium channel is needed for synaptic transmission so incorrect

C) It is correct answer, because when calcium does not encounter the vesicle in presynaptic neurone so it will not able to fuse with membrane and release neurotransmitter so translation of chemical impulse to electric impulse is prevented.

D) It is affected, so incorrect

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