घ्राणेंद्रिय-विषयक इसके अंग्रेजी अर्थ का उदाहरण

Olfaction occurs when odorants bind to specific sites on olfactory receptors located in the nasal cavity.

Glomeruli aggregate signals from these receptors and transmit them to the olfactory bulb, where the sensory input will start to interact with parts of the brain responsible for smell identification, memory, and emotion.

In vertebrates, smells are sensed by olfactory sensory neurons in the olfactory epithelium.

The olfactory epithelium is made up of at least six morphologically and biochemically different cell types.

The proportion of olfactory epithelium compared to respiratory epithelium (not innervated, or supplied with nerves) gives an indication of the animal's olfactory sensitivity.

Humans have about of olfactory epithelium, whereas some dogs have .

A dog's olfactory epithelium is also considerably more densely innervated, with a hundred times more receptors per square centimeter.

Molecules of odorants passing through the superior nasal concha of the nasal passages dissolve in the mucus that lines the superior portion of the cavity and are detected by olfactory receptors on the dendrites of the olfactory sensory neurons.

The mucus overlying the epithelium contains mucopolysaccharides, salts, enzymes, and antibodies (these are highly important, as the olfactory neurons provide a direct passage for infection to pass to the brain).

The posterior parolfactory sulcus separates the paraterminal gyrus from BA25.

Olfactory receptor gene (OR) is normally expressed in human and mouse olfactory tissue with a main function as odorant receptor for the detection of odorants.

In a study, researchers identified ectopic expression of OR genes in non-olfactory tissues in the mouse model by measuring transcript levels.

Here they found relatively low OR gene expression compared to the olfactory tissue, which result indicates that the OR gene in other tissue have no extra function, but they suggest that there is a possibility that small OR subsets can have functional roles in different tissue.