Final answer:
Thermoreceptors and nociceptors are responsible for transducing temperature and pain stimuli. Chemicals like bradykinin, acid, acetylcholine, prostaglandins, and substance P can stimulate nociceptors, triggering the sensation of pain.
Step-by-step explanation:
Pain and temperature are two types of somatosensory signals transduced by free nerve endings. Thermoreceptors and nociceptors are responsible for transducing temperature and pain stimuli, respectively. Mechanical, chemical, and thermal stimuli beyond a certain threshold can elicit painful sensations. Chemicals like bradykinin, acid, acetylcholine, prostaglandins, and substance P can stimulate nociceptors, triggering the sensation of pain.
Thermoreceptors and nociceptors are responsible for transducing temperature and pain stimuli. Chemicals like bradykinin, acid, acetylcholine, prostaglandins, and substance P can stimulate nociceptors, triggering the sensation of pain.