Which sensory receptor type is primarily responsible for detecting chemical stimuli such as odors and tastes?

Which sensory receptor type is primarily responsible for detecting chemical stimuli such as odors and tastes?

• A. Mechanoreceptors
• B. Thermoreceptors
• C. Chemoreceptors
• D. Photoreceptors

Answer: (C)

Chemoreceptors are the receptors that detect chemical stimuli such as odors and tastes. Odor molecules bind to receptors in the nasal epithelium (olfactory receptors) and tastants bind to receptors in taste buds (gustatory receptors), triggering signal transduction that sends neural signals to the brain. This chemical basis of detection distinguishes them from other receptor types: mechanoreceptors respond to mechanical forces like pressure or vibration, thermoreceptors to temperature changes, and photoreceptors to light. So chemical sensing—odors and tastes—is the domain of chemoreceptors.

Chemoreceptors are the receptors that detect chemical stimuli such as odors and tastes. Odor molecules bind to receptors in the nasal epithelium (olfactory receptors) and tastants bind to receptors in taste buds (gustatory receptors), triggering signal transduction that sends neural signals to the brain. This chemical basis of detection distinguishes them from other receptor types: mechanoreceptors respond to mechanical forces like pressure or vibration, thermoreceptors to temperature changes, and photoreceptors to light. So chemical sensing—odors and tastes—is the domain of chemoreceptors.