The optic tract is a part of the visual system in the brain. The tract starts from the optic chiasma, which receives the optic nerves from the eyes.[1]
There are two individual tracts, the left optic tract and the right optic tract. Each passes visual information only from the other side of the visual field.
Each tract develops from retinal fibers from each eye corresponding to one-half of the visual field.
References
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| Terminal (CN 0) | |
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| Olfactory (CN I) |
- Nuclei
- anterior olfactory nucleus
- Course
|
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| Optic (CN II) |
- Nuclei
- lateral geniculate nucleus
- Course
|
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| Oculomotor (CN III) |
- Nuclei
- oculomotor nucleus
- Edinger–Westphal nucleus
- Branches
- superior
- parasympathetic root of ciliary ganglion
- inferior
|
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| Trochlear (CN IV) | |
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| Trigeminal (CN V) |
- Nuclei
- PSN
- spinal trigeminal nucleus
- MN
- TMN
- Course
- Branches
- ophthalmic
- maxillary
- mandibular
|
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| Abducens (CN VI) | |
|---|
| Facial (CN VII) | | Near origin |
- Intermediate nerve
- Geniculate
|
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Inside facial canal |
- Greater petrosal
- Nerve to the stapedius
- Chorda tympani
- lingual nerve
- submandibular ganglion
|
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At stylomastoid foramen |
- Posterior auricular
- Suprahyoid
- Parotid plexus
- temporal
- zygomatic
- buccal
- mandibular
- cervical
|
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| Nuclei |
- Facial motor nucleus
- Solitary nucleus
- Superior salivary nucleus
|
|---|
|
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| Vestibulocochlear (CN VIII) |
- Nuclei
- vestibular nuclei
- cochlear nuclei
- Cochlear nerve
- striae medullares
- lateral lemniscus
- Vestibular
|
|---|
| Glossopharyngeal (CN IX) | | Before jugular fossa | |
|---|
| After jugular fossa |
- Tympanic
- tympanic plexus
- lesser petrosal
- otic ganglion
- Stylopharyngeal branch
- Pharyngeal branches
- Tonsillar branches
- Lingual branches
- Carotid sinus
|
|---|
| Nuclei |
- Nucleus ambiguus
- Inferior salivatory nucleus
- Solitary nucleus
|
|---|
|
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| Vagus (CN X) | | Before jugular fossa | |
|---|
| After jugular fossa |
- Meningeal branch
- Auricular branch
|
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| Neck |
- Pharyngeal branch
- Superior laryngeal
- Recurrent laryngeal
- Superior cervical cardiac
|
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| Thorax |
- Inferior cardiac
- Pulmonary
- Vagal trunks
|
|---|
| Abdomen |
- Celiac
- Renal
- Hepatic
- Anterior gastric
- Posterior gastric
|
|---|
| Nuclei |
- Nucleus ambiguus
- Dorsal nucleus of vagus nerve
- Solitary nucleus
|
|---|
|
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| Accessory (CN XI) |
- Nuclei
- nucleus ambiguus
- spinal accessory nucleus
- Cranial
- Spinal
|
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| Hypoglossal (CN XII) | |
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