NIC Barber Written (Theory) ExamScientific ConceptsMedium
A barber is performing a facial massage and needs to identify the muscle responsible for closing the eyelids. Which muscle is primarily responsible for this action?
- ACorrugator supercilii
- BOrbicularis oculi
- CProcerus
- DFrontalis
Show answer & explanationAnswer & explanation
Correct answer: B. Orbicularis oculi
The orbicularis oculi muscle is a circular muscle that surrounds the eye, and its primary function is to close the eyelids, as well as to cause squinting and winking.
Why the other options are wrong
- A. The corrugator supercilii draws the eyebrows down and in, causing vertical wrinkles (frowning).
- C. The procerus muscle draws the eyebrows down and causes horizontal wrinkles across the bridge of the nose.
- D. The frontalis muscle raises the eyebrows and wrinkles the forehead horizontally.
Orbicularis Oculi
A circular muscle surrounding the eye that controls the closing of the eyelids.
- Responsible for blinking, squinting, and winking.
- Part of the muscles of facial expression.
- Important for protecting the eye.
Memory trick: O-C-P-F: Ocular Close, Corrugate Frown, Pro Nose, Frontal Lift.