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It provides an attachment point for the rectus abdominus muscle.
The diaphragm is the main muscle of respiration. It is a dome shaped muscle with it's origin at the sternum, xiphoid process, coastal cartilage, 7th to 12th ribs and L2/3. It's insertion is the central tendon.
muscle from the sternum to the mastoid process, throught the clavicle
Styloid Process of the radius
Olecranon process of the ulna
The muscle is from your clavical to your skull. The insertion of the muscle it's attachment to the skull.
Rectus abdominis
The sternocleidomastoid is a muscle that connects to your sternum, and the mastoid process.
The insertion of the temporalis muscle is on the coronoid process of the mandible.
No. It's not vestigial. "The xiphoid process anchors several important muscles, including the abdominal diaphragm, a sheet-like muscle that is necessary for normal breathing. It also anchors the rectus abdominus muscle (the "abs," responsible for the bodybuilder's "sixpack") and the transversus thoracis muscle, located just inside the front of the ribs."
Sternoclamastoid...... it has 3 connecting points the Mastoid process of your jaw, the clavicle, and the sternum.... hence the name. I am not positive I spelled it correct but that is what that muscle is called.
The Coracoid process of the ulna is a triangular projection with a rough surface. The Coracoid process is the insertion site for the brachialis muscle.