The nervous system 0.0 / 5 ? BiologycoordinationA2/A-levelWJEC Created by: aaa117Created on: 03-06-16 15:02 nervous system detects changes or stimuli inside body or from surroundings, processes info and initiates response 1 of 9 CNS brain and spinal cord 2 of 9 peripheral nervous system pairs of nerves from brain to spinal cord and neurones 3 of 9 stimulus detectable change in internal or external environment of an organism 4 of 9 reflex action rapid involuntary response resulting from nervous impulses initiated by a stimulus, involuntary and brain not involved. protective function 5 of 9 nerve net simple nerve cells with short extensions joined to each other and branching in a number of different directions 6 of 9 sensory neurones bring impulses from sense organs to receptors into CNS 7 of 9 motor neurone carry impulses from CNS to effectors 8 of 9 relay neurone receive impulses from sensory neurones or other intermediates 9 of 9
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