What are Thermoreceptors?
Sensitive to changes in temperature (within a range)
What are Mechanoreceptors?
Respond to:
What are Photoreceptors?
Respond to light energy (eg. Retina in the eye)
What are Chemoreceptors?
Respond to chemicals (smell, taste, changes in blood chemistry).
What are Nociceptors?
Sensitive to pain-causing stimuli (eg. Extreme heat or cold, excessive pressure, inflammatory chemicals)