Question

Read the following statements about the transmission of nerve impulse and select the correct ones.
(i) In a neuron, nerve impulse travels from the axonal
end to the dendritic end as:
Axonal end ->Axon-> Cell body-> Dendritic end
(ii) The chemicals released from the axonal end of one neuron cross the synapse and generate a similar electrical impulse in the dendrite of another neuron.
(iii) A neuron transmits the nerve impulses not only to another neuron but also to the muscle cells and gland cells.
(iv) The neurotransmitter released at the post-synaptic membrane, diffuses across the synapse and comes into contact with the chemoreceptor sites in the pre-synaptic membrane.

• A. (ii) and (iii) only
• B. (i) and (iv) only
• C. (iii) and (iv) only
• D. (i) and (ii) only

Answer 1

The correct option is A (ii) and (iii) only

• The chemicals released from the axonal end of one neuron cross the synapse and generate a similar electrical impulse in the dendrite of another neuron.
• A neuron transmits the nerve impulses not only to another neuron but also to the muscle cells and gland cells.