Brainstem Medulla Multiple Choice Questions

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Brainstem Medulla Oblongata Multiple Choice Questions

Question 1. The following statements about the brainstem are true except

  1. It consists of the pons, medulla and cerebellum
  2. It is continuous above with the thalamus, hypothalamus and cerebral hemispheres
  3. It is continuous below with the spinal cord
  4. It lies in posterior cranial fossa

Answer: 1. It consists of the pons, medulla and cerebellum

Question 2. Which of the following statements about the attachment of cranial nerves is false?

  1. The brainstem gives attachment to all the cranial nerves
  2. The nuclei of cranial nerves 3 to 7 are situated deep in the brainstem
  3. Cranial nerves 3 and 4 are attached to midbrain
  4. Cranial nerve 5 is attached to the pons
  5. Cranial nerves 6 to 7 are attached to the medulla

Answer: 1. Brainstem gives attachment to all the cranial nerves

Question 3. Which of the following statements about the ventral aspect of the medulla is false?

  1. On either side of the anteromedian fissure, there is the presence of a pyramid.
  2. Olive is present lateral to the anterolateral sulcus
  3. The posterolateral sulcus gives attachment to the cranial nerve 7 Ventral aspect of the medulla is related to basisphenoid (clivus)
  4. The anterolateral sulcus is present between the olive and pyramid

Answer: 3. Posterolateral sulcus gives attachment to cranial nerve 7 Ventral aspect of the medulla is related to basisphenoid (clivus)

Question 4. Which of the following statements about the posterior surface of the lower part of the medulla is true?

  • This surface lies between the posteromedian sulcus and the posterolateral sulcus
  • This surface is an upward continuation of fasciculi gracilis and cuneatus
  • Fasciculi gracilis and cuneatus are continuous above as gracile and cuneate tubercles
  • Lateral to fasciculus cuneatus, a swelling is seen that is known as tuberculum cinereum
  • All of the above

Answer: 4. Lateral to fasciculus cuneatus, a swelling is seen that is known as tuberculum cinereum

Question 5. Which of the following statements about the transverse section of the medulla at the level of sensory decussation is false?

  1. This level is cranial to pyramidal decussation
  2. Nuclei gracilis and cuneatus are situated on the posterior aspect of the section
  3. The nucleus of the spinal tract of the trigeminal nerve is situated ventrolateral to the nucleus cuneatus
  4. Nucleus ambiguus is situated in the area of reticular formation
  5. None of the above

Answer: 3. The nucleus of the spinal tract of the trigeminal nerve is situated ventrolateral to the nucleus cuneatus

Question 6. Which of the following facts about the medial longitudinal bundle is false?

  1. In the medulla, it is present posterior to the media lemniscus
  2. It is present anterior to the hypoglossal nucleus
  3. It is present throughout the brainstem in the same paramedian position
  4. It consists of ascending and descending fibres connecting various cranial nerve nuclei (3, 4, 6 and 8).
  5. None of the above

Answer: 3. It is present throughout the brainstem in the same paramedian position

Question 7. Medial medullary syndrome is caused by to occlusion of

  1. Anterior spinal artery
  2. Posterior inferior cerebellar artery
  3. Pontine artery
  4. Vertebral artery

Answer: 1. Anterior spinal artery

Question 8. Lateral medullary syndrome is caused due to

  1. Occlusion of vertebral artery
  2. Anterior spinal artery
  3. Posterior inferior cerebellar artery
  4. Anterior inferior cerebellar artery

Answer: 3. Posterior inferior cerebellar artery

Question 9. Which of the following cranial nerve nuclei lie in the medulla?

  1. Facial nerve nucleus
  2. Abducent nerve nucleus
  3. Sensory nucleus of the trigeminal nerve
  4. The dorsal nucleus of the vagus

Answer: 4. Dorsal nucleus of the vagus

Question 10. The following sensations are carried by the tracts of the posterior spinal column (funiculus) except

  1. Proprioceptive sensation
  2. Tactile localisation
  3. Bladder distension
  4. Pain

Answer: 4. Pain

Question 11. Which is false regarding branches supplying blood to the medulla?

  1. Posterior inferior cerebellar artery
  2. Unnamed branches form vertebral arteries
  3. Posterior spinal artery
  4. Anterior inferior cerebellar artery
  5. Anterior spinal artery

Answer: 1. Posterior inferior cerebellar artery

Question 12. Which of the following statements about the connection of the medulla to the cerebellum is true?

  1. Through afferent fibres only
  2. Through both afferent and efferent fibres
  3. Through the middle cerebellar peduncle
  4. Through both middle and inferior cerebellar peduncles

Answer: 2. Through both afferent and efferent fibres

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