6Antagonist & AgonistMuscles can only pull. To make a joint move in two directions, you need two muscles that can pull in opposite directions.Antagonistic muscles are pairs of muscles that work against each other.One muscle contracts (agonist, or prime mover) while the other one relaxes (antagonist) and vice versa.
8Origin & InsertionMuscles are attached to two different bones by tendons. When the muscle contracts only one bone moves.The place where the muscle is attached to the stationary bone is called the Origin.The place where the muscle is attached to the moving bone is called the Insertion.OriginFLEXIONInsertion
9___origin _____ tendon ___insertion___tendon___origin______tendon___insertion____tendonforearm is lowered
10SynergistsAny other muscle which helps the prime mover to cause a movement is a Synergist.An example of this is when bending the arm at the elbow, the synergist would be the brachialis muscle in the forearm.
11Agonist and Antagonist Muscles Preparing to kick a ballKicking a footballAbduction of the arm from the side of your bodyBicep curl
12For the following movements give the agonist and antagonist QuestionsFor the following movements give the agonist and antagonistBicep Curla) Preparing to kick a ballb) Kicking a footballc) Abduction of the arm from the side of yourbodyd) Bicep curl