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8 Cards in this Set
- Front
- Back
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what is the nervous system needed for? |
to help to coordinate and control the body |
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what is a receptor for? |
an organ or body part that detects a change in the surroundings |
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identifiy the stimuli for each decector |
receptor stimuli
eyes light
ears sound
skin touch/pressure/pain
tongue taste
nose smell |
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what is a neurone |
a speciallised cell in the nervous system |
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complete the table |
nurone function
sensory send impulses from receptors in the sense organs to the CNS
relay the links sensory and motor neurones
motor send impulse from th CNS to muscles and glands |
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describe what happeneds in a reflex arc |
automatic response to a stimulus can bypass the CNS |
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lable the parts |
A- receptor (reacts to a stimulus) b- sensory nurone ( carries messages to the co-ordinator/CNS) c-relay nurone gaps between nurones are called SYNAPES d- motor nurone carries messages away from co-ordinator/CNS e- effectors (a muscle or gland) |
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how does the nervous system transmit information in the body |
via electrical signals- impulses. |
