This blog will cover and explain the specification for Edexcel triple science course 2013 for biology. Hope it helps :)
Saturday, 23 February 2013
2.84 understand that the central nervous system consists of the brain and spinal cord and is linked to sense organs by nerves
The CNS is the centre of the nervous system which decides a response for a stimulus. Receptors in sense organs (eg eyes or skin) send messages through nerves to the CNS- either to you brain or spinal chord- it creates a response which it will send in electrical impulses down nerves to effectors to carry out the response.
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Sorry spinal cord not chord as in guitar chord. Great blog though
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