THE NERVOUS SYSTEM Science 10.

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THE NERVOUS SYSTEM Science 10

The Nervous System The brain controls almost everything that happens in your body We can live without certain organs, but no one can live without a brain The brain is just part of the nervous system  the system that senses the environment and coordinates appropriate responses The nervous system is made up of the brain, spinal cord and peripheral nerves

Structural Features The nervous system is made up two parts: Central Nervous System brain and spinal cord Peripheral Nervous System nerves that carry signals between the central nervous system and the body

Nerve Tissue nerves are made up of specialized cells called neurons their structure enables them to send information around your body they do this by conducting electrical signals – nerve impulses – from one area of the body to another

Sensory Receptors sensory receptors are specialized cells that receive input from our external environment and send signals to the brain in addition to the familiar senses, we have receptors in our muscles and skin that are sensitive to pressure, temperature and pain

Cool Facts About the Nervous System If we lined up all the neurons in our body it would be around 1000 km long The left side of human brain controls the right side of the body and the right side of the brain controls the left side of the body Neurons are the largest cells in the human body. (up to 1m long) The Nervous System can transmit impulses as fast as 360 km/h Video: Nervous System