Question

an individual picks up a cup and drinks from it. this is an example of _. a. a concentric contraction because muscles cause the elbow joint and arm to move b. an eccentric contraction because the release of the muscle in the back of the arm causes the elbow to bend c. an isometric contraction because the cup was stationary until the hand picked it up d. a midcentric contraction because the movement took place around the core of the body please select the best answer from the choices provided.

Explanation:

A concentric contraction occurs when a muscle shortens to generate force and move a load. When an individual picks up a cup and drinks from it, muscles cause the elbow joint and arm to move, which is a concentric contraction. Eccentric contractions involve muscle lengthening, isometric contractions are when muscle tension is present but no movement occurs, and "midcentric" is not a standard muscle - contraction term.

Answer:

A. a concentric contraction because muscles cause the elbow joint and arm to move