NERVOUS SYSTEM (স্নায়ুতন্ত্র)

(React and respond to stimulation)

System Description :

The nervous system is a complex network of nerves and cells that carry messages to and from the brain and spinal cord to various parts of the body. The nervous system includes both the Central nervous system and Peripheral nervous system.
The central nervous system is the brain, the spinal cord, and nerves. ... The structure of the system includes the brain and spinal cord, which together are called the central nervous system. The brain has billions of nerve cells to help think, walk, and breathe.

Functions of the Nervous system :

The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body. Together, these organs are responsible for the control of the body and communication among its parts.
The nervous system has three general functions: a sensory function, an interpretative function and a motor function. Sensory nerves gather information from inside the body and the outside environment. The nerves then carry the information to central nervous system (CNS).

Parts of the Nervous System :

In vertebrates it consists of two main parts, the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS consists of the brain and spinal cord. The PNS consists mainly of nerves, which are enclosed bundles of the long fibers or axons, that connect the CNS to every other part of the body.