For muscles to create a movement, they can only pull, not push
{"Image DocumentName": "For muscles to create a movement, they can only pull, not push", "Image ImageDescription": "Muscles in the body rarely work alone, & are usually arranged in groups surrounding a joint. A muscle that contracts to create the desired action is known as an agonist or prime mover. A muscle that helps the agonist is a synergist. A muscle that opposes the action of the agonist, therefore undoing the desired action is an antagonist.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}