Biology · Coordination and Control

The explanation for this question is as follows: The Outer zone is white matter and contains axons of sensory neurons in the dorsal column and axons of motor neurons in the ventral column; these nerve tracts may also contain the dendrites of the nerve cells. The inner zone is Grey matter and primarily consists of the cell bodies of interneurons, motor neurons, and neuroglia.

The outer zone is white matter and contains axons of sensory neurons in the dorsal column and axons of motor neurons in the ventral column; these nerve tracts may also contain the dendrites of the nerve cells. The inner zone is Grey matter and primarily consists of the cell bodies of interneurons, motor neurons, and neuroglia. So, this option is correct.

Consecutive neurons are so arranged that the axon endings of one neuron are connected to the dendrites of the next neuron. There is no cytoplasmic connection between the two neurons, and microscopic gaps are left between them. Each of these contact points is known as a synapse.

A neuron has a relatively large cell body (soma) containing the nucleus and a variety of cell organelles in cytoplasm. Nissl's bodies or granules are a group of ribosomes and rough endoplasmic reticulum associated with protein synthesis.

This option is incorrect as option A is the right answer.