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5 Written questions

5 Matching questions

  1. What is the difference between the optic nerve and the optic track? How does crossing work in the nerves of the optic nerve.
  2. What is the role of the geniculate ganglion?
  3. Explain the specific branches of the mandibular nerve.
  4. What divides the anterior, medial, and posterior cranial fossa?
  5. Explain the function of the hypoglossal nerve (CNXII)
  1. a Sphenoid ridge- Anterior from medial
    Petrous ridge- medial from posterior
  2. b Supplies muscle of the tongue. Especially the genioglossus muscle going from the tip of the mandible to the posterior portion of the tongue.
  3. c 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.
  4. d It is the sensory ganglion for taste from the facial nerve (through the lingual nerve).
  5. e Has the lingual (sensation to tonuge) and the mental (sensation to mandible) components.

5 Multiple choice questions

  1. Abducent- Lateral rectus
    Trochlear- Superior oblique
  2. 1. cribiform plate with holes for the olfactory nerve
    2. Carotid canal, foramen ovale
    3. Magnum foramen, internal accousti meatus, jugular foramen
  3. Up- Superior oblique and inferior rectus
    Down- Inferior oblique and superior rectus
  4. Behind maxiallary sinus. Postganglionic sympathics from greater petrosal nerve (facial) for parasympth. of nasal/lacramal/palatine glands. also branches of the trigeminal
  5. 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.

5 True/False questions

  1. Explain the pathway of the facial nerve (CNVII)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.


  2. What are the different duramatter in the brain?Falx Cerebri: divides the cerebral lobes
    Tentorium Cerebelli: Divides the cerebrum from the pons- except for the tentorial notch w/ allows communication


  3. What are the functions of the trigeminal nerve (CNV)Sensory/motor
    Opthalmic- sensation to forehead and cornea
    Maxillary- sensation to maxillary and upper teeth
    Mandibular- sensation to madible and works chewing muscles


  4. What muscles are responsible for opening and closing the eye?Opening- Levator palpebrae superioris
    Closing- orbicularis oculi


  5. Explain the peripheral pathway of the CNVII- oculomotor nerve.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.