5 Written questions
5 Matching questions
- What specific muscles of the eye are controlled by the abducent nerve (CNVI) and the trochlear nerve (CNIV)
- Explain the function of the hypoglossal nerve (CNXII)
- Where is the hypogloassal canal?
- What are the parasympathetic ganglions in the face?
- Explain how taste occurs.
- a Abducent- Lateral rectus
Trochlear- Superior oblique
- b Supplies muscle of the tongue. Especially the genioglossus muscle going from the tip of the mandible to the posterior portion of the tongue.
- c COPS:
Ciliary (III), Otic (IX), Pterygopalatine (VII), Submandibular (VII).
- d On the side of the foramen magnum
- e Anterior 2/3 is the facial nerve (CNVII) through lingual nerve.
Posterior 1/3 is the glossopharngeal nerve (CN IX)
5 Multiple choice questions
- 1. Nasopharynx
- 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.
- 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.
- Falx Cerebri: divides the cerebral lobes
Tentorium Cerebelli: Divides the cerebrum from the pons- except for the tentorial notch w/ allows communication
- 1. Supraorbital notch
2. Infraorbital foramen
3. Mental foramen
5 True/False questions
What divides the anterior, medial, and posterior cranial fossa? → glossopharngeal (CNIX) sends preganglionic parasymphatetics to the parotid gland.
What is the structure of duramatter. → Where the jugular vein leaves as well as CN 9, 10, 11. (Vagus, glosspharngeal, accessory).
Explain the pathway of the accessory nerve (CNXI) and the branches. → 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.
What muscles responsible for adduction and abduction of the eye? → Extorsion: Inferior oblique and rectus
Intorsion: Superior oblique and rectus
What muscles are responsible for opening and closing the eye? → Opening- Levator palpebrae superioris
Closing- orbicularis oculi