5 Written questions
5 Matching questions
- Explain the pathway of the accessory nerve (CNXI) and the branches.
- What muscles responsible for adduction and abduction of the eye?
- Explain the peripheral pathway of the CNVII- oculomotor nerve.
- Explain the function of the submandibular ganglion.
- What is the role of the otic ganglion?
- a Has a cranial and spinal root. Spinal root comes to join the cranial root in the skull and then they leave the skull. Cranial root becomes apart of the vagus nerve and the spinal root innervates the traps and sternocleidomastoid. PAIN GOES TO CERVICAL NOT CRANIAL ROOTS.
- b glossopharngeal (CNIX) sends preganglionic parasymphatetics to the parotid gland.
- c Has voluntary movement and parasymphthetic constriction of the eye. As such- synapse in the ciliary ganglion behind the eye and the to the brain. REMEMBER THIS SYNAPSE before going to the brain.
- d Chorda typani (facial) post ganglionic parasympathtics to the submandibular gland and the submental gland.
- e Adduction: Medial, Superior, Inferior rectus
Abduction: Lateral, superior, inferior obliques
5 Multiple choice questions
Ciliary (III), Otic (IX), Pterygopalatine (VII), Submandibular (VII).
- Up- Superior oblique and inferior rectus
Down- Inferior oblique and superior rectus
- Against Medial wall sits the carotid siphon and the sphenoid fossa.
CN III, IV, VI corse through to exit out the superior orbital fissure (between the wings of the sphenoid).
Trigeminal splits to exit (opthalmic out the superior orbital fissure, maxillary out the foramen rotunda, and mandibular out the foramen ovale).
- 1. cribiform plate with holes for the olfactory nerve
2. Carotid canal, foramen ovale
3. Magnum foramen, internal accousti meatus, jugular foramen
- Opening- Levator palpebrae superioris
Closing- orbicularis oculi
5 True/False questions
Explain how taste occurs. → Where the jugular vein leaves as well as CN 9, 10, 11. (Vagus, glosspharngeal, accessory).
Explain branching of the internal carotid artery. → Splits into:
1. opthalmic (eye supply)
2. Middle cerebral (lateral side of brain)
3. Anterior cerebral (anterior medial portion of the brain)
Anastomoses with the vertebral artery.
Explain the peripheral pathway of the CNVIII- Vestibulocochlear nerve. → Has voluntary movement and parasymphthetic constriction of the eye. As such- synapse in the ciliary ganglion behind the eye and the to the brain. REMEMBER THIS SYNAPSE before going to the brain.
What is the difference between the optic nerve and the optic track? How does crossing work in the nerves of the optic nerve. → Optic Nerve: eye to chiasm
Optic Tract: chiasm to brain
Nasal portion nerves cross in chiasm while the lateral portions do not. Thus left field processed by right side of the brain and vice-versa.
Explain the function of the hypoglossal nerve (CNXII) → Supplies muscle of the tongue. Especially the genioglossus muscle going from the tip of the mandible to the posterior portion of the tongue.