Question

Identify the missing parts in the following diagram.

• A. a - Dendrites, b - Nucleus, c - Axon, d - Cell body
• B. a - Axon, b - Dendrites, c - Cell body, d - Nucleus
• C. a - Dendrites, b - Cell body, c - Axon, d - Nucleus
• D. a - Axon, b - Cell body, c - Dendrites, d - Nucleus

Answer 1

The correct option is A a - Dendrites, b - Nucleus, c - Axon, d - Cell body

Given is the labelled diagram of a neuron:

$\bullet$ Neuron is the structural and functional unit of the nervous system. It conducts information in the form of electrical impulses.
$\bullet$ The dendrites receive the impulse which flows through the axon.
$\bullet$ On reaching the axon terminal, chemical messengers called neurotransmitters are released.
$\bullet$ These chemicals cross the synapse and initiate a similar electrical impulse in the dendrite of next neuron.
This is how nervous impulses travel in the body.