PATHOLOGY

Detailed explanation-1: -Answer and Explanation: The correct answer is option B because the central nervous system does not receive input from motor nerve cells, it sends outputs via motor nerve cells to effector muscles, and receives input from sensory nerve cells.

Detailed explanation-2: -The diameter of the neurons can range between 4 to 100 microns. In a child developing inside the womb, neurons grow at the rate of 250, 000 neurons per minute. By the time of its birth, the baby’s brain consists of around 10 million nerve cells. The human spinal cord consists of around 13, 500, 000 neurons.

Detailed explanation-3: -A nerve conveys information in the form of electrochemical impulses (as nerve impulses known as action potentials) carried by the individual neurons that make up the nerve.