Answers

2015-09-11T16:52:56+05:30
Receptor is that which receives the electrical signal in the nervous system but effector is that which comes back from spinal cord in for of response. 
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2015-09-12T15:59:32+05:30
Receptors are the nerve cells that receive stimuli or messages from outside world whereas effectors(muscle) are those that react or give response to the stimuli..
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