Question

The nervous system is defined as ________.

A. a complex network of cells that carries information to and from all parts of the body
B. a specialized cell that makes up the brain and nervous system
C. all nerves and neurons that are not contained in the brain and spinal cord but that run throughout the body itself
D. a gland located in the brain that secretes human growth hormone

Answer 1

The nervous system is a complex network of cells that carries information to and from all parts of the body. It includes the brain, spinal cord, and peripheral nerves. Neurons transmit electrical signals, while glial cells support neurons.

Step-by-step explanation:

The nervous system is a complex network of cells that carries information to and from all parts of the body. It is composed of the brain and spinal cord (central nervous system) and the nerves that run throughout the body (peripheral nervous system). Neurons, which are specialized cells, transmit electrical signals called nerve impulses, while glial cells provide support for neurons.