Multiple Choice
In anatomical terminology, what is the term for a muscle’s attachment to the movable bone?
10. Muscles
Origin and Insertion
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In human anatomy, the masseter muscle originates on which bone/structure?
A
Coronoid process of the mandible
B
Mastoid process of the temporal bone
C
Mental protuberance of the mandible
D
Zygomatic arch (zygomatic bone)
Verified step by step guidance1
Understand that the masseter muscle is one of the primary muscles involved in mastication (chewing).
Recall that the origin of a muscle is the fixed attachment point, usually on a bone that remains stationary during contraction.
Identify the bones and structures listed: the coronoid process and mental protuberance are parts of the mandible, the mastoid process is part of the temporal bone, and the zygomatic arch is part of the zygomatic bone.
Know that the masseter muscle originates specifically from the zygomatic arch, which is a bony arch on the side of the skull formed by the zygomatic bone and temporal bone.
Therefore, the correct origin of the masseter muscle is the zygomatic arch (zygomatic bone), which allows it to elevate the mandible during chewing.
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