34. Two of the actions of the traperius muscle are to upwardly rotate and elevat

Question

34. Two of the actions of the traperius muscle are to upwardly rotate and elevate the scapula. Which of the following muscles would serve as an antagonist to these actions? a. latissimus dorsi b. rhomboideus major c. trapezius d pectoralis major e. serratus anterior 35. The pectoralis major abducts, depresses and downwardly rotates the scapula. Which of the following muscles would be antägonistic to one of the actions of the pectoralis major? a. supraspinatus b. infraspinatus c. subscapularis d. teres minor e teres major 36. Which of the following muscles would be antagonistic to all of the actions of the flexor carpi radialis? a. palmaris longus b. extensor digitorum c. extensor indicis d. extensor pollicis brevis e. extensor carpi radialis longus f extensor carpi ulnaris 37. Which of the following muscles would be antagonistic to the actions of the lateral fibers of the deltoid? b. pectoralis major c. pectoralis minor d. trapezius e· rhomboid major The serratus anterior abducts and upwardly rotates the scapula, which of the following muscles would be antagonistic to both of those actions? 38· a. supraspinatus b. pectoralis major c. pectoralis minor d. latissimus dorsi e. rhomboid major

Explanation / Answer

34) a latissimus dorsi depresses and downwardly rotates the scapula

35) c or e

36) f: extensor carpi ulnaris is the antagonist.

37) b: pectoralis major performs adduction of shoulder i.e. the antagonist to lateral fibers of deltoid.

38) e rhomboid major is the antagonist as it adducts and downwardly rotates the scapula

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