EVERYDAY SCIENCE

Detailed explanation-1: -The olfactory bulbs serve as a relay station for all impulses transmitted between the olfactory epithelium and the primary olfactory cortex.

Detailed explanation-2: -Olfactory nerve (CN I) The olfactory fibers cross the skull base through the olfactory foramina of the cribriform plate and enter the olfactory bulb in the olfactory groove. The olfactory bulb proceeds to the olfactory tract, which courses posteriorly at the medial inferior surface of the frontal lobe.

Detailed explanation-3: -The initial event in odor perception is the detection of odorants by olfactory (odorant) receptors (ORs), which are located on olfactory sensory neurons in the olfactory epithelium of the nose (1–4).

Detailed explanation-4: -Structure. The specialized olfactory receptor neurons of the olfactory nerve are located in the olfactory mucosa of the upper parts of the nasal cavity.

Detailed explanation-5: -The olfactory nerve is the first cranial nerve and is instrumental in our sense of smell. The olfactory nerve contains only afferent sensory nerve fibers and, like all cranial nerves, is paired.