The Nervous System |
The nervous system coordinates other body systems through electrical signals. The nervous system is made up of the central nervous system, including the brain and spinal cord, and the peripheral nervous system.
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Read pages 10 & 11 Amazing Science 9 and answer the following questions:
1 About how many nerve cells does your body contain? 2 Which of the following are parts of the central nervous system? Cerebral cortex, nerves in your arm, pain receptors in your fingertip, spinal cord, brain stem 3 Which animals have the most developed cerebral cortex? 4 ‘A reflex is a message sent by your brain to a limb.’ True or false? 5 List two components of a nerve cell. ![]()
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