Describe the difference between the function of an effector and receptor, giving an example of each.

Receptors are specialised cells used to detect, stimuli or even convert stimulus in to an impulse. They are usually found in sense organs like the eye, which has light sensitive receptors known as retina, it is able to convert this stimuli to electrical impulses to be sent to the brain via neurones, for visual recognition. Meanwhile the role of an effector is to carry out a response which acts by converting impulses into an action. This could be a muscle or a gland, an example of this is muscles contracting to move an arm or a muscle squeezing saliva from the salivary gland.