Texas Cosmetology Operator Written ExamAnatomy and PhysiologyMedium
A cosmetologist is evaluating a client's facial structure. Which bone forms the upper jaw and is an important part of the facial skeleton?
- ANasal bone
- BZygomatic bone
- CMandible
- DMaxilla
Show answer & explanationAnswer & explanation
Correct answer: D. Maxilla
The maxilla is the bone that forms the upper jaw, holds the upper teeth, and contributes significantly to the mid-face structure. The mandible forms the lower jaw.
Why the other options are wrong
- A. The nasal bones form the bridge of the nose, not the upper jaw.
- B. The zygomatic bone forms the cheekbone, not the upper jaw.
- C. The mandible forms the lower jaw, not the upper jaw.
Maxilla Bone
The maxilla is a paired bone that forms the upper jaw, part of the hard palate, the floor of the nasal cavity, and the floor of the orbits.
- Holds the upper teeth.
- Forms the central part of the facial skeleton.
- Contributes to the shape of the face.
- Articulates with many other facial bones.
Memory trick: Maxilla is the 'Max' of the upper jaw.