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.

4 comments:

  1. Sorry spinal cord not chord as in guitar chord. Great blog though

    ReplyDelete
  2. The Biology Syllabus has changed.... New Syllabus Blog:

    http://igcse-biology-2017.blogspot.hk

    ReplyDelete
  3. more at

    http://igcse-biology-notes.blogspot.hk/2017/06/284-understand-that-central-nervous.html

    ReplyDelete