Brainstem Pons Multiple Choice Questions

Brainstem Pons Multiple Choice Questions

Question 1. Which of the following statements about pons is false?

1. It lies in front of the cerebellum
2. The posterior laulaco oi pons IN is formed by the upper surface of the Iho root of the fourth ventricle.
3. The posterior surface of pons Is lit laterally by
   superior cerebellar peduncles
4. The posterior surface of the pons Is released In the cerebellum

Answer: 2. The posterior laulaco oi pons IN is formed by the upper surface of the Iho root of the fourth ventricle.

Question 2. Which of the following statements about pons Is false?

1. The ventral surface of pons Is bounded by upper and lower bonders
2. The ventral surface of pons Is convex
3. There is a shallow basilar groove In the midline, which lodges the basilar plexuses of veins
4. Laterally, the ventral surface is continuous with the middle cerebellar peduncle
5. The ventral surface of the pons is About the basisphenoid (clivus) bone

Answer: 3. Laterally, the ventral surface is continuous with the middle cerebellar peduncle

Question 3. All the following statements about the transverse section of the pons are true except.

1. The section is divided into basilar and tegmental parts
2. The basilar part contains transversely and vertically running white fibres
3. The basilar part does not contain grey matter (nuclei)
4. Transverse fibres run laterally to form the middle cerebellar peduncle
5. Vertical fibres run downwards to form the pyramid

Answer: 3. The basilar part does not contain grey matter (nuclei)

Question 4. Which of the following descending fibres are present in the die basilar part of die pons?

1. Corticospinal
2. Corticonuclear
3. Corticopontine
4. All of the above

Answer: 4. All of the above

Question 5. Which of the following statements about the corticomotor cerebellar pathway is false?

1. It arises from frontal, temporal, parietal and occipital lobes
2. It terminates on pontine nuclei of the same side
3. The fibres arising from pontine nuclei constitute transverse fibres (pontocerebellar) of the pons
4. Pontocerebellar fibres enter the cerebellum on the same side through the middle cerebellar peduncle.

Answer: 4. Pontocerebellar fibres enter the cerebellum on the same side through the middle cerebellar peduncle.

Question 6. The Efforts of the vestibular a relay Million In die 1 in 3 pilot cerebellar pathway of die vrullbiilm mu leur complex form die following?

1. Vestibulocerebeller tract
2. Vestibulospinal tract
3. Medial longitudinal bundle
4. lateral lemniscus
5. Medial lemniscus

Answer: 5. Medial lemniscus

Question 7. The trapezoid body is formed by

1. Fibre of both dorsal and ventral cochlear nuclei
2. Efferents iirlulng from superior olivary nuclei
3. Efferents arising from (lie nucleus of die trapezoid body
4. All of the above

Answer: 4. All of the above

Question 8. Which of the following menisci are present in the white mailer of tegmentum at the upper level of pons?

1. Medial lemniscus
2. Spinal lemniscus
3. Trigeminal lemniscus
4. Lateral lemniscus
5. All of the above

Answer: 5. All of the above

Question 9. The following statements about pontine haemorrhage are true except

1. It occurs due to occlusion or haemorrhage of pontine arteries
2. Corticospinal fibres are damaged leading to hemiplegia on the opposite side of the body
3. Facial paralysis on the opposite side of the body due to damage to the facial nucleus
4. There is hyperpyrexia due to damage to sympathetic fibres through which the heat-regulating centre exerts its effect
5. Pinpoint pupil due to damage to sympathetic fibres

Answer: 3. Facial paralysis on the opposite side of the body due to damage to the facial nucleus

Question 10. Which ofthe following facts about Raymond’s syndrome are true?

1. It results from to occlusion of pontine branches of the basilar artery
2. Damage occurs to corticospinal fibres
3. Damage to abducent nerve fibres
4. All of the above

Answer: 4. All of the above