The nervous system
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The nervous system controls all bodily functions and is composed of the brain, spinal cord, and nerves. It allows for communication between the brain and body through neural pathways that transmit electric signals along neurons. There are voluntary actions under conscious control and involuntary actions that are unconscious like breathing and blinking. The brain is divided into the cerebrum for thinking and voluntary actions, cerebellum for movement coordination, and brainstem for regulating involuntary organs and functions. The peripheral nervous system connects the central nervous system to the rest of the body to transmit signals.
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The nervous system
- 2. The nervous system controls everything you do, including breathing, walking, thinking, and feeling. This system is made up of your brain, spinal cord, and all the nerves in your body.
- 3. The nerves carry the messages to and from the body, so the brain can interpret them and take action.
- 4. The main cells are called neurones. There are 2 different parts to a neurone. The body and the branches. The neurones carry the messages around the body, by an electric current.
- 5. A voluntary action is something that we decide to do, or not do, ourselves. We can control when we do them. Voluntary actions include talking, running, eating…
- 6. An involuntary action is something that we cannot control. We do not tell our body to do it. Involuntary actions include breathing, blinking, our heart beating…
- 7. 1.Cerebrum (brain) Controls all the activity in the nervous system. In charge of thinking, and voluntary actions. 2.Cerebellum Coordinates movement. Helps us to learn new things. 3.Brain stem. Regulates the organs, like the heart, the stomach, liver, lungs etc. Involuntary actions
- 8. The peripheral nervous system carries messages to and from the central nervous system. It sends information to the brain and carries out orders from the brain.