THE NERVOUS SYSTEM ( 6th Grade)

THE CENTRAL NERVOUS SYSTEM

1.BRAIN

•Cerebrum: voluntary movements

( walking, dancing, jumping), thoughts, emotions, language and behavior.

It is divided into the left and right hemispheres.

•Cerebellum: balance, movement and coordination.

•Brain stem: involuntary movements (digestion, respiration, heart beatings).

It connects  the brain to the spinal cord.

2.SPINAL CORD is made up of nerve tissue.

It controls reflex actions (spontaneous reactions that protect

our body from danger, such as pulling  your hands away from a hot object).

It is protected by vertebrae.


THE PERIPHERAL NERVOUS SYSTEM

It is made up of nerves that carry messages to and from the central nervous system.

Process:

1.Sensory neurons transmit information from the sense organs

(eyes, nose, ears, tongue and skin) to the brain.

2.The brain interprets the information and decides how to respond.

3.Motor neurons carry messages away from the brain

to the rest of our body and muscles.