GENERAL HISTOLOGY

Detailed explanation-1: -Your olfactory nerve is the first cranial nerve (CN I). This nerve enables your olfactory system and sense of smell. Many conditions can affect cranial nerve 1, including COVID-19, diabetes and Alzheimer’s. It’s important to see your healthcare provider for difficulties with your sense of smell.

Detailed explanation-2: -The sense of the smell allows to perceive and to differentiate the odours. Based on the emotions evoked by different odours they are classified to positive, negative or neutral. Smell receptors are chemical receptors and telereceptors. Adequate stimuli are odour molecules dispersed in the air.

Detailed explanation-3: -The olfactory nerve carries impulses for the sense of smell. The optic nerve carries impulses for the sense of sight. The occulomotor nerve is responsible for motor enervation of upper eyelid muscle, extraocular muscle and pupillary muscle.

Detailed explanation-4: -Function. The afferent nerve fibers of the olfactory receptor neurons transmit nerve impulses about odors to the central nervous system, where they are perceived as smell (olfaction). The olfactory nerve is special visceral afferent (SVA).

Detailed explanation-5: -The trigeminal nerve has receptors for pungent odorants throughout the nasal and pharyngeal cavities. The glossopharyngeal and vagus nerves provide the minor chemosensory function in the pharyngeal area. The ciliated olfactory receptors are part of the olfactory neuroepithelium.