GENERAL HISTOLOGY

Detailed explanation-1: -Olfactory receptors (ORs), also known as odorant receptors, are chemoreceptors expressed in the cell membranes of olfactory receptor neurons and are responsible for the detection of odorants (for example, compounds that have an odor) which give rise to the sense of smell.

Detailed explanation-2: -olfactory receptor, also called smell receptor, protein capable of binding odour molecules that plays a central role in the sense of smell (olfaction). These receptors are common to arthropods, terrestrial vertebrates, fish, and other animals.

Detailed explanation-3: -Smell. Olfactory receptor neurons (ORNs) are bipolar neurons that are activated when airborne molecules in inspired air bind to olfactory receptors (ORs) expressed on their cilia. The ORs belong to a G-protein-coupled receptor superfamily. The ORNs are located high within the nasal vault in the olfactory epithelium.

Detailed explanation-4: -Olfactory receptors (ORs) belong to the G-protein-coupled receptor family and play a critical role in recognizing thousands of odorant molecules in the olfactory sensory system.

Detailed explanation-5: -Our classic understanding of sensory receptors has been that they are confined to the sensory organs in which they were initially identified: olfactory receptors in the nose, taste receptors on the tongue, and light receptors in the retina.