The muscle marked in diagram is supplied by the nerve, whose nucleus is situated at the level of:
A. Superior colliculus
B. Facial colliculus
C. Inferior colliculus
D. Superior olivary nucleus
Answer- A. Superior colliculus
- Medial rectus has been labelled in the image above, which is supplied by oculomotor nerve. Nucleus of oculomotor nerve is situated at the level of superior colliculus.
- “The third nerve nucleus is located in the midbrain near the cerebral aqueduct at the level ofthe superior colliculus.
- The main oculomotor nucleus is situated in the anterior part of the grey matter that surrounds the cerebral aqueduct of the midbrain, It lies at the level of superior colliculus.” Snell’s 7/ep340