activity focuses on what muscles do-and as you work with the models and the info

Question

activity focuses on what muscles do-and as you work with the models and the info in your lab manual, text, This and tutorials, you may find that more than one muscle may do the activity listed. For example, when a muscle acts as an agonist for one movement, it may be the antagonist for another. There are also muscles which work together as groups (synergists) to produce movement. Some muscles help stabilize a joint (fixators). So, some of the questions below may have more than one correct answer-but you only need to supply one. (But you can certainly include more info if you wish!) I encourage you to work on this as groups, as it can be a fun activity to work on with others, but it needs to be filled out and turned in by you as an individual as part of this week's lab. Muscle/Answer: Question stei noclei dowasto What muscle from your list is involved with turning your head (rotating or pivoting the head)? masseter This muscle elevates the mandible, which closes the mouth del Hoid This muscle is the "prime mover" or "agonist" of arm abduction. (What is a "prime mover?") This muscle is the major "antagonist" of the muscles that flex the forearm. (What is an "antagonist?") hiCeps blachi This muscle affects the scapula, and would be involved with "shrugging" the shoulders (shrugging the shoulders is lifting them up in an " don't know..." posture). Sehatus arterior atissimus dorsi This muscle could bring the arm downward in a power stroke, as if to strike a blow. Sarorious You would use this muscle to help you cross your legs. (Hint: sitting on the floor in a yoga posture- the lostus position-involves this muscle, too) This muscle group acts primarily on the knee; involved with extension at the knee.

Explanation / Answer

quadriceps femoris muscle group (rectus femoris, vastus lateralis, vastus medias,vastus intermedias) crosses the knew via platella and acts to extend the knee hip abductor muscle are the muscle help in abduct the thigh agonist and antagonist pair :quadricep and hamstrings in the leg, agonist and antagonist bicep and tricep in the arm.

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