NIC Barber Written (Theory) ExamScientific ConceptsMedium
A barber is performing a facial massage and needs to identify the muscle responsible for closing the jaw during chewing. Which muscle should the barber target to relieve tension in this area?
- AZygomaticus Major
- BTemporalis
- CBuccinator
- DOrbicularis Oris
Show answer & explanationAnswer & explanation
Correct answer: B. Temporalis
The temporalis muscle is one of the primary muscles of mastication, responsible for elevating and retracting the mandible (closing the jaw). Along with the masseter, it is a key muscle for chewing.
Why the other options are wrong
- A. The Zygomaticus Major lifts the corners of the mouth, as in smiling.
- C. The Buccinator compresses the cheek, as in blowing or sucking.
- D. The Orbicularis Oris encircles the mouth and is responsible for puckering the lips.
Temporalis Muscle
A large, fan-shaped muscle on each side of the head, above and behind the ear, that functions in mastication (chewing) by elevating and retracting the mandible.
- Originates from the temporal fossa.
- Inserts into the coronoid process of the mandible.
- Crucial for jaw closure and clenching.
Memory trick: Jaw closure? Temporalis is a 'tempo'rary relief for chewing!