Olfactory Nerve Location In Brain

The specialized olfactory receptor neurons of the olfactory nerve are located in the olfactory mucosa of the upper parts of the nasal cavitythe olfactory nerves consist of a collection of many sensory nerve fibers that extend from the olfactory epithelium to the olfactory bulb passing through the many openings of the cribriform plate a sieve like structure of the ethmoid bone. This nerve is known as cranial nerve 1 as it is the smallest cranial nerve and one of the two nerves that bypasses the stem of brain and links directly to the brain. The odor information originates in the epithelium of the nasal cavity and is transported to the brain via components of the olfactory nerve cranial nerve 1 cni and the olfactory pathway.
olfactory nerve location in brain

The olfactory nerve is sometimes referred to as the first cranial nerve or cn1.

Olfactory nerve location in brain. Another important function of the olfactory nerve is to identify chemicals present in the air and transfer information about the same to the brain. The anatomical course of the olfactory nerve describes the transmission of special sensory information from the nasal epithelium to the primary olfactory cortex of the brain. Also known as cn1 the olfactory nerve is the first of 12 cranial nerves located within the head. The sense of smell is detected by olfactory receptors located within the nasal epitheliumtheir axons fila olfactoria assemble into small bundles of true olfactory nerves which.

Olfactory sensory neurons in the epithelium detect odor molecules dissolved in the mucus and transmit information about the odor to the brain in a process called sensory transduction. Cranial means of the skull of the 12 cranial nerves the olfactory nerve and the optic nerve which relays visual information to the brain are the only ones that dont connect to the brainstem. Olfactory nerve pathways are considered as a major component of nose to brain delivery. A decreased sense of smell has been associated with parkinsons disease and thus can be an important clinical marker in this and other states of disease or injury.

It was reported that the intranasally administrated 3 kda fluorescein dextran was transferred in the connective tissue surrounding the olfactory nerve bundles to the olfactory bulb within 15 min jansson and bjork 2002. Olfactory neurons have cilia tiny hairs containing olfactory receptors that bind to odor molecules causing an electrical response that spreads through the sensory neuron to the olfactory nerve fibers at the. It relays sensory data to the brain and it is responsible for the sense of smell.