zygomatic major

The zygomatic major muscle is a slender band of muscle located on each side of the face. It originates from the zygomatic bone, also known as the cheekbone, and inserts into the orbicularis oris muscle and the skin at the corner of the mouth. This muscle plays a role in facial expression and is part of the broader muscular system found in mammals, which is generally comparable to that of reptiles, though with adaptations for locomotion and specific functions. The zygomatic arch, a prominent bony structure that includes the zygomatic bone, serves as an origin for powerful chewing muscles like the masseter.1234