Muscles Advanced Information More Able Pupils. Agonist or Prime Mover (Biceps contract) The muscle doing the work (contracting) and creating the movement.

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Presentation transcript:

Muscles Advanced Information More Able Pupils

Agonist or Prime Mover (Biceps contract) The muscle doing the work (contracting) and creating the movement is called the agonist or prime mover. Flexion (Bending) of the Arm Antagonist (Triceps relax) The muscle which is relaxing and letting the movement take place is called the antagonist. Other muscles support the prime mover (agonist) in creating movement and these are called synergists.

The insertion is where the tendon of the muscle joins the moving bone(s). The Origin and Insertion When a muscle contracts, only one bone moves leaving the other stationary. The points at which the tendons are attached to the bone are known as the origin and the insertion. Origin Insertion The radius and ulna are the moving bones. The origin is where the tendon of the muscle joins the stationary bone(s). The arm is being flexed. The humerus and scapula are stationary bones.