Human Nervous System

Q1

What are the two divisions of the nervous system?

The human nervous system controls all activities of the body in a quicker fashion. It can be divided into the central nervous system and peripheral nervous system. The central nervous system includes spinal cord and brain and the peripheral covers the nerves branching from spinal cord and brain.

Q2

What are nerves and neurons?

Nerves are thread-like structures that emerge from the spinal cord and brain. These nerves are actual projections of neurons. A neuron is a basic structural and functional unit of a nervous system that conducts electrochemical signals.

Q3

What are cranial nerves?

The nerves that extend throughout the body on both sides and emerges directly from the brain stem and brain are called cranial nerves. They carry information from the brain to other parts, primarily to the neck and head.