Question

Cranial nerve _____ comes out of the superior colliculus. It is associated with Edinger-Westphal nucleus. How many muscles does it innervate?

A) Cranial nerve III - Innervates 4 muscles.
B) Cranial nerve V - Innervates 3 muscles.
C) Cranial nerve VII - Innervates 2 muscles.
D) Cranial nerve IX - Innervates 5 muscles.

Answer 1

Cranial nerve III, or the oculomotor nerve, comes out of the superior colliculus and is associated with the Edinger-Westphal nucleus. It innervates 4 muscles that control eye movements.

Step-by-step explanation:

The cranial nerve associated with the Edinger-Westphal nucleus and comes out of the superior colliculus is cranial nerve III, also known as the oculomotor nerve. The oculomotor nerve innervates 4 muscles: the superior rectus, inferior rectus, medial rectus, and inferior oblique. These muscles are responsible for various movements of the eyes.