Question

Arrange the following in sequence during the transmission of nerve impulse at chemical synapse.

1. Neurotransmitter binds with receptors of post synaptic cell.
2. Calcium channels open and the calcium diffuses inward from ECF.
3. Impulse travels along the axon of presynaptic neuron.
4. Release of neurotransmitter by exocytosis.
5. Synaptic vesicles fuse with cell membrane of axon terminal of presynaptic neuron.

विकल्प

• i, ii, v, iii, iv

• iii, v, ii, iv, i

• ii, v, i, iii, iv

• iii, ii, v, iv, i

Answer 1

iii, ii, v, iv, i

Explanation:

The transmission of a nerve impulse at a chemical synapse follows a precise chronological order:

Impulse travels along the axon of presynaptic neuron.

Calcium channels open and the calcium diffuses inward from ECF.

Synaptic vesicles fuse with cell membrane of axon terminal of presynaptic neuron.

Release of neurotransmitter by exocytosis.

Neurotransmitter binds with receptors of post synaptic cell.