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Anatomy Week 15 Test

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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 are the different duramatter in the brain?
  3. Explain the function of the submandibular ganglion.
  4. What is the role of the geniculate ganglion?
  5. Explain the function of the pterygopalatine ganglion.
  1. a Chorda typani (facial) post ganglionic parasympathtics to the submandibular gland and the submental gland.
  2. b It is the sensory ganglion for taste from the facial nerve (through the lingual nerve).
  3. c Behind maxiallary sinus. Postganglionic sympathics from greater petrosal nerve (facial) for parasympth. of nasal/lacramal/palatine glands. also branches of the trigeminal
  4. d 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.
  5. e Falx Cerebri: divides the cerebral lobes
    Tentorium Cerebelli: Divides the cerebrum from the pons- except for the tentorial notch w/ allows communication

5 Multiple Choice Questions

  1. Anterior 2/3 is the facial nerve (CNVII) through lingual nerve.
    Posterior 1/3 is the glossopharngeal nerve (CN IX)
  2. 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).
  3. Opening- Levator palpebrae superioris
    Closing- orbicularis oculi
  4. 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. Supplies muscle of the tongue. Especially the genioglossus muscle going from the tip of the mandible to the posterior portion of the tongue.

5 True/False Questions

  1. 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.

          

  2. Explain branching of the internal carotid artery.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.

          

  3. 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.

          

  4. Explain where the trigeminal nerve exits externally.CN 7 and CN 8 (Facial and vestibulacoclear) leave the skull.

          

  5. What muscles responsible for adduction and abduction of the eye?Extorsion: Inferior oblique and rectus
    Intorsion: Superior oblique and rectus

          

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