Olfactory nerves

Olfactory nerves (nn. Olfactorii ) are formed by axons of olfactory (receptor) cells located in the mucosa of the olfactory region of the nasal cavity. This area corresponds to the upper and partly middle nasal shells and the upper part of the septum of the nose. The number of olfactory cells in humans reaches 6 million (30,000 receptors per 1 mm ² of mucosal surface). Axons of olfactory cells pass between the supporting cells of the mucosa of the olfactory region. The olfactory nerve fibers do not form a single nerve trunk, they gather in 15-20 thin stems. Olfactory nerves pass through the holes of the trellis plate and are sent to the olfactory bulb of the olfactory tract of the brain. Here, the synaptic contact of the axon terminals with the dendrites of the mitral neurons of the olfactory bulb is performed (see "Organs of the senses").