Alberta Written Barber Practice Exam

What muscle circles the eye socket and closes the eyelid?

1. Orbicularis oris

2. Zygomaticus major

3. Orbicularis oculi

4. Risorius

The correct answer is: Orbicularis oculi

The muscle that circles the eye socket and is responsible for closing the eyelid is known as the orbicularis oculi. This is a crucial muscle in facial expressions and functions by contracting to close the eyelids, facilitating actions such as blinking and squinting. It plays a vital role in protecting the eyes from bright light and foreign objects, as well as in the overall movement and expression of the face. The orbicularis oculi muscle is specifically designed for this action, unlike the other muscles listed. The orbicularis oris, for instance, surrounds the mouth and is involved in actions like puckering and closing the lips. The zygomaticus major is primarily associated with smiling, as it raises the corners of the mouth, while the risorius assists in the expression of laughing or grinning. Understanding the specific function of each of these muscles helps clarify why the orbicularis oculi is the correct choice for this question. It is particularly adapted to its role around the eyes, making it essential for the functions directly related to eyelid movement and protection.