Question

1. the structure b (pointer) near the carotid artery supplies this/these extraocular muscle/s.

a. lateral rectus
b. superior oblique
c. medial rectus
d. none of the above

Explanation:

To solve this, we recall the innervation of extraocular muscles. The abducens nerve (cranial nerve VI), which is near the carotid artery (structure B here), innervates the lateral rectus muscle. The superior oblique is innervated by the trochlear nerve (CN IV), and the medial rectus by the oculomotor nerve (CN III). So structure B (related to abducens nerve) supplies the lateral rectus.

Answer:

a. Lateral rectus