Which one of the following occurs when we straighten your arm?
The correct answer is Triceps contract and biceps relax. When we straighten our arm Triceps contract and biceps relax.
What muscle is found on the lateral aspect of the shoulder and elevates the arm?
The deltoid, the thick muscle that creates the rounded lines of the shoulder is the major abductor of the arm, but it also facilitates flexing and medial rotation, as well as extension and lateral rotation. The subscapularis originates on the anterior scapula and medially rotates the arm.
What two muscles of the arms perform bending or extending actions?
…the elbow; the brachialis and biceps muscles act to bend the arm at the elbow.
What are the flexor muscles?
flexor muscle, any of the muscles that decrease the angle between bones on two sides of a joint, as in bending the elbow or knee. Several of the muscles of the hands and feet are named for this function.
What muscles extend the arm?
Triceps brachii: This muscle at the back of the upper arm extends the arm and stabilizes the elbow when the hand is used for fine movements.