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8 Cards in this Set
- Front
- Back
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what is the nervous system needed for? |
To send messaged to various parts of the body |
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what is a receptor for? |
an organ or body part that detects a change (stimulus) in the surroundings. |
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complete the following table |
Receptor Simuli
Eyes Light Ears Sound Skin Touch/Pressure/Pain Tongue Taste Nose Smell |
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what is a neurone? |
a specilised cell in the nervous system |
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complete the table |
Neurone Function
sensory Send impulses from receptors in sense organs to CNS relay Link sensory and motor neurones motor Send impulses from the CNS to muscles and glands |
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Describe what happens in a reflex arc? |
Automatic responses to a stimulus can bypass the CNS |
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Label the parts of a reflex arc |
A - receptor (reacts to a stimulus) B - Sensory neurone (carries messages to the CNS) C - Relay neurone - Gaps between neurons are called synapses D - Motor neurone - carries messages away from CNS E - Effector - a muscle or gland |
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How does the nervous system transmit information in the body? |
Via electrical signals - impulses |
