5 Written questions
5 Matching questions
- What are the parasympathetic ganglions in the face?
- What muscles are responsible for opening and closing the eye?
- Explain the structures in the cavernous sinus.
- Explain the peripheral pathway of the CNVII- oculomotor nerve.
- What muscles responsible for looking up and down?
- a 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.
- b COPS:
Ciliary (III), Otic (IX), Pterygopalatine (VII), Submandibular (VII).
- c Up- Superior oblique and inferior rectus
Down- Inferior oblique and superior rectus
- d 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).
- e Opening- Levator palpebrae superioris
Closing- orbicularis oculi
5 Multiple choice questions
- CN 7 and CN 8 (Facial and vestibulacoclear) leave the skull.
- 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.
- 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.
- Supplies muscle of the tongue. Especially the genioglossus muscle going from the tip of the mandible to the posterior portion of the tongue.
- Chorda typani (facial) post ganglionic parasympathtics to the submandibular gland and the submental gland.
5 True/False questions
Where is the hypogloassal canal? → Where the jugular vein leaves as well as CN 9, 10, 11. (Vagus, glosspharngeal, accessory).
What are the structures of the:
1. anterior base of the skull
2. medial base of the skull
3. posterior base of the skull → 1. cribiform plate with holes for the olfactory nerve
2. Carotid canal, foramen ovale
3. Magnum foramen, internal accousti meatus, jugular foramen
Explain where the trigeminal nerve exits externally. → CN 7 and CN 8 (Facial and vestibulacoclear) leave the skull.
What is the role of the geniculate ganglion? → It is the sensory ganglion for taste from the facial nerve (through the lingual nerve).
What specific muscles of the eye are controlled by the abducent nerve (CNVI) and the trochlear nerve (CNIV) → 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.