Origin of the Zygomaticus muscle?

Origin of the Zygomaticus muscle?

• A. Masseter
• B. Frontalis
• C. Orbicularis Oris
• D. Zygomaticus

Answer: (D)

Origin refers to where a muscle begins on the skeleton, the fixed attachment it pulls from. The Zygomaticus major and minor start on the zygomatic bone (the cheekbone) and extend to the mouth area, allowing elevation of the corners of the mouth to create a smile. The other muscles have different fixed attachments: the masseter starts at the zygomatic arch and maxilla and attaches to the mandible, the frontalis attaches to the galea aponeurotica on the scalp, and the orbicularis oris encircles the mouth but does not originate from the zygomatic bone. So the zygomatic bone is the origin for the Zygomaticus.

Origin refers to where a muscle begins on the skeleton, the fixed attachment it pulls from. The Zygomaticus major and minor start on the zygomatic bone (the cheekbone) and extend to the mouth area, allowing elevation of the corners of the mouth to create a smile. The other muscles have different fixed attachments: the masseter starts at the zygomatic arch and maxilla and attaches to the mandible, the frontalis attaches to the galea aponeurotica on the scalp, and the orbicularis oris encircles the mouth but does not originate from the zygomatic bone. So the zygomatic bone is the origin for the Zygomaticus.