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Wednesday, 20 April 2016

Parts of the nervous system

Parts of the nervous system
The nervous system is made up of three main parts;
•The brain
•The spinal cord

•Nerve fibres
It detects stimuli such as light, sounds, temperature, pressure, pain 
and co-ordinates the bodies response
For example;
If you smell something burning…
•Your nose (receptor) detects the stimulus (smell)
Nerve fibres send the message to the brain
•Your brain then sends a message to move your body away or
 to put out the fire!
Parts of the nervous system,biology ,free notes ,free study material,scceducation,
EFFECTORS


An effector is any part of the body that 

produces the response.

Here are some examples of effectors:

a muscle contracting to move the arm

a muscle squeezing saliva from the salivary 

gland

a gland releasing a hormone into the blood

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