Medial Medullary Syndrome and Pons Anatomy: Key Structures and Clinical Correlates

Question 1. Write a short note on medial medullary syndrome.

Answer.  Causes Of Medial Medullary Syndrome 

Ischaemia of the medial region of the medulla due to thrombosis of the anterior spinal artery.

medial medullary syndrome

Clinical Features Of Medial Medullary Syndrome 

• Contralateral hemiplegia (UMN type of paralysis) due to involvement of (pyramidal tract)
• Ipsilateral paralysis of the tongue due to the involvement of the hypoglossal nerve (LMN type of paralysis)
• Contralateral loss of proprioceptive sensations due to involvement of the medial meniscus

Pons

Question 2. Enumerate the main structures seen in the transverse section of the pons at the level of the facial colliculi.

The main structures seen in the transverse section of the pons at the level of the facial colliculi are as follows:

pons anatomy

• Abducent nucleus
• Motor nucleus of the facial nerve
• Internal genu of the facial nerve

cranial nerve nuclei in pons

• Dorsal and ventral cochlear nuclei
• Trapezoid body