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5 Written questions

5 Matching questions

  1. Explain the internal acoustic meatus?
  2. Explain the peripheral pathway of the CNI- Olfactory nerve.
  3. Where is the hypogloassal canal?
  4. What muscles responsible for adduction and abduction of the eye?
  5. Explain the function of the pterygopalatine ganglion.
  1. a 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.
  2. b Behind maxiallary sinus. Postganglionic sympathics from greater petrosal nerve (facial) for parasympth. of nasal/lacramal/palatine glands. also branches of the trigeminal
  3. c CN 7 and CN 8 (Facial and vestibulacoclear) leave the skull.
  4. d On the side of the foramen magnum
  5. e Adduction: Medial, Superior, Inferior rectus
    Abduction: Lateral, superior, inferior obliques

5 Multiple choice questions

  1. Two layers:
    1. meningeal layer (to tissue)
    2. periosteal layer (to the skull)
    The area in between the two is sinus where vein can travel.
  2. 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.
  3. Sphenoid ridge- Anterior from medial
    Petrous ridge- medial from posterior
  4. Chorda typani (facial) post ganglionic parasympathtics to the submandibular gland and the submental gland.
  5. 1. cribiform plate with holes for the olfactory nerve
    2. Carotid canal, foramen ovale
    3. Magnum foramen, internal accousti meatus, jugular foramen

5 True/False questions

  1. Explain the structures in the cavernous sinus.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).

          

  2. What muscles are responsible for opening and closing the eye?Extorsion: Inferior oblique and rectus
    Intorsion: Superior oblique and rectus

          

  3. Explain the pathway of the facial nerve (CNVII)Supplies muscle of the tongue. Especially the genioglossus muscle going from the tip of the mandible to the posterior portion of the tongue.

          

  4. What are the functions of the trigeminal nerve (CNV)Supplies muscle of the tongue. Especially the genioglossus muscle going from the tip of the mandible to the posterior portion of the tongue.

          

  5. Explain the specific branches of the mandibular nerve.1. Cervical
    2. Buccal
    3. Zygomatic
    4. Mandibular
    5. temporal