AEMCA Practice Exam

What function does cranial nerve 2 serve?

1. Controls facial expressions

2. Controls sense of vision

3. Controls movement of the neck

4. Regulates balance and coordination

The correct answer is: Controls sense of vision

Cranial nerve II, also known as the optic nerve, is primarily responsible for conveying visual information from the retina to the brain. This nerve plays a crucial role in the sense of vision by transmitting impulses that the brain interprets as images, enabling individuals to perceive their surroundings. Understanding the specific functions attributed to cranial nerves is essential in the field of anatomy and physiology. Other cranial nerves have distinct roles, such as controlling facial expressions, neck movement, and balance, which are handled by different nerves. By knowing the unique function of cranial nerve II, one can better grasp the intricacies of the nervous system and its impact on sensory perception.