5 Written questions
5 Matching questions
- Explain where the trigeminal nerve exits externally.
- Explain the pathway of the facial nerve (CNVII)
- Explain the peripheral pathway of the CNVIII- Vestibulocochlear nerve.
- What specific muscles of the eye are controlled by the abducent nerve (CNVI) and the trochlear nerve (CNIV)
- Explain the specific branches of the mandibular nerve.
- a Enters the internal acoustic meatus to hit the geniculate ganglion. Main branch goes out the stylomastoid foramen to supply face muscles, while it sends a chorda tympani branch to join lingual to go to submandibular/mental glands and carry taste. A smaller branch leaves geniculate ganglion called the greater petrosal nerve to hit the pterygopalatine ganglion and supply other glands.
- b 1. Supraorbital notch
2. Infraorbital foramen
3. Mental foramen
- c Has the lingual (sensation to tonuge) and the mental (sensation to mandible) components.
- d Abducent- Lateral rectus
Trochlear- Superior oblique
- e 1. Cochlear (for hearing) in the spiral part of the middle ear goes to the spiral ganglion (cell bodies)
2. Vestibular (balance) in the vestibular appartus goes to the vestibular ganglion (cell bodies)
Axons from both of these converge to leave middle ear to the brain.
5 Multiple choice questions
- Opening- Levator palpebrae superioris
Closing- orbicularis oculi
- Sphenoid ridge- Anterior from medial
Petrous ridge- medial from posterior
- 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.
- Receptors in the nose travel to the cell bodies in the olfactory bulb that sits on the cribiform plate of the ethmoid bone. Here axons continue to the brain.
- Anterior 2/3 is the facial nerve (CNVII) through lingual nerve.
Posterior 1/3 is the glossopharngeal nerve (CN IX)
5 True/False questions
What is the structure of duramatter. → Where the jugular vein leaves as well as CN 9, 10, 11. (Vagus, glosspharngeal, accessory).
What are the parasympathetic ganglions in the face? → Falx Cerebri: divides the cerebral lobes
Tentorium Cerebelli: Divides the cerebrum from the pons- except for the tentorial notch w/ allows communication
What muscles responsible for adduction and abduction of the eye? → Adduction: Medial, Superior, Inferior rectus
Abduction: Lateral, superior, inferior obliques
Explain the flow of veins in the brain. → Down posterior through superior saggital sinus of the falx cerebri. then through the transverse sinus of the tentorium cerebelli. then to the internal jugular vein.
What is the role of the otic ganglion? → It is the sensory ganglion for taste from the facial nerve (through the lingual nerve).