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  1. Nov 8, 2018 · The origin of the muscle has more mass while the insertion of the muscle has less mass. Movement. The origin of the muscle does not move during contraction while the insertion of muscle moves towards the origin during contraction. Hence, this is also a difference between origin and insertion of muscles. Conclusion

  2. Muscle. Action. Origin. Insertion. buccinator. pressing cheek inward, compressing air while blowing. maxilla bone, mandible bone. orbicularis oris. depressor anguli oris. opening the mouth, sliding the lower jaw right and left. mandible bone. corners of the mouth. depressor labii inferioris. drawing the lip downward. mandible bone. lower lip ...

  3. Feb 23, 2024 · Knowing the origin of a muscle is crucial for a better understanding of how your muscles function. It serves as the foundation, providing the necessary stability for your muscles to generate force. By knowing where the muscle originates, health professionals can predict the muscle’s actions, guide rehabilitation following injury, and even provide therapeutic interventions.

  4. Muscle origins and insertions describe the places where a muscle attaches on bones. Conventionally, a muscle origin describes the attachment of a muscle on the more stable bone. The insertion then, is the attachment of a muscle on the more moveable bone. The action of the muscle describes what happens when the more mobile bone is brought toward ...

  5. Keep reading to learn what all the other muscle jargon means! 1. Muscles Attach to Bones At Locations Called Origins and Insertions. A skeletal muscle attaches to bone (or sometimes other muscles or tissues) at two or more places. If the place is a bone that remains immobile for an action, the attachment is called an origin.

  6. The location of a muscle’s attachment can also appear in its name. When the name of a muscle is based on the attachments, the origin is always named first. For instance, the sternocleidomastoid muscle of the neck has a dual origin on the sternum (“sterno”) and clavicle (“cleido”) and inserts on the mastoid process of the temporal bone ...

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  8. Muscles that seem to be plump have a large mass of tissue located in the middle of the muscle, between the insertion and the origin, which is known as the central body, or belly. When a muscle contracts, the contractile fibers shorten it to an even larger bulge.

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