Parts of the nervous system ~ SCC Education

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!

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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