Thursday, 7 February 2013

Sense organs, their receptors and the stimulus they respond to.


The five sense organs and the receptor it contains are:
touch-skin, pressure , pain and temperature
smell- nose, smell receptors near the olfactory nerve.
Taste- Tongue, ( taste receptors  sweet, sour, salt and bitter)
Hearing- ears, ear doom
Sight- retina, eyes
Stimulus is a thing or event that triggers a specific functional reaction in an organ or tissue: "areas of the brain which respond to auditory stimuli
A receptor is an organ or cell able to respond to light, heat, or other external stimulus and transmit a signal to a sensory nerve


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