What is the lateral olfactory stria?
The lateral olfactory tract is the principal route of communication between the olfactory bulb and the prepiriform and piriform olfactory cortex, and various amygdalar cortical nuclei (caudal olfactory centers).
Where does the medial olfactory stria go?
The medial olfactory stria medially passes along the rostral boundary of the anterior perforated substance, nearing the medial continuation of the diagonal band of Broca. Together, these curve upwards on the medial hemisphere aspect. This is anterior to the attachment of the lamina terminalis.
What is the main destination of the lateral olfactory tract?
Lateral olfactory tract (LOT) cells are born in the neocortical field of the pallium, and migrate tangentially through the surface of the hemisphere to reach their final destination at the pallial-subpallial boundary.
What is the neural pathway for smell?
The olfactory nerve is a solely sensory nerve and conveys the sense of smell. Its receptors are located in the olfactory mucosa under the roof of the nasal cavity. The olfactory fibers cross the skull base through the olfactory foramina of the cribriform plate and enter the olfactory bulb in the olfactory groove.
What causes olfactory nerve damage?
The principal causes of olfactory dysfunction are sinonasal diseases, viral infections, head injuries, and neurodegenerative diseases.
Which cranial nerves are purely sensory?
Cranial nerves I, II, and VIII are pure sensory nerves.
Is the olfactory nerve sensory or motor?
| Nerves in Order | Modality | Function |
|---|---|---|
| Olfactory | Special Sensory | Smell |
| Optic | Special Sensory | Vision |
| Oculomotor | Somatic Motor Visceral Motor | Levator palpebrae, superioris, superior, medial & inferior recti muscles Parasympathetic to ciliary & pupillary constrictor muscles |
| Trochlear | Somatic Motor | Superior oblique muscle |
What is the main function of the olfactory tract?
The function of the olfactory tract is to connect the olfactory bulb to multiple areas within the center of the brain.
How is the mucus produced by the olfactory glands reaches the olfactory glands?
Olfactory glands drain secretions directly to the surface via short ducts .
What is the correct order for the sensory pathway of taste?
Three nerves carry taste signals to the brain stem: the chorda tympani nerve (from the front of the tongue), the glossopharyngeal nerve (from the back of the tongue) and the vagus nerve (from the throat area and palate).
What is the neural pathway for taste?
The three nerves associated with taste are the facial nerve (cranial nerve VII), which provides fibers to the anterior two-thirds of the tongue; the glossopharyngeal nerve (cranial nerve IX), which provides fibers to the posterior third of the tongue; and the vagus nerve (cranial nerve X), which provides fibers to the …