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.

Detailed explanation-2: -Neuroanatomy, Cranial Nerve 1 (Olfactory)

Detailed explanation-3: -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.

Detailed explanation-4: -Integration areas of olfactory sensations are extensive, including the olfactory cortex and the olfactory tubercle, some parts of cerebral tonsils, certain hypothalamic areas, medio–dorsal thalamus and medial and lateral orbito–frontal cortex [7].