Which is an eccentric function of the extensor carpi radialis brevis?
A)restrains/slows ulnar deviation (adduction)of the hand at the wrist joint
B)restrains/slows radial deviation (abduction)of the hand at the wrist joint
C)restrains/slows extension of the hand at the wrist joint
D)restrains/slows flexion of the arm at the glenohumeral joint

Question

Quizplus · Accepted Answer

The extensor carpi radialis brevis, when acting eccentrically, helps to control or slow down the movement towards ulnar deviation by lengthening while the hand is moving in the opposite direction (towards ulnar deviation). This is because eccentric contractions occur when a muscle lengthens under tension, often to control the speed and direction of movement.

Which Is an Eccentric Function of the Extensor Carpi Radialis