If a muscle crosses the metacarpophalangeal and/or interphalangeal joints of the fingers posteriorly,what will its eccentric function of the fingers be?
A)restrains/slows flexion
B)restrains/slows extension
C)restrains/slows abduction
D)restrains/slows adduction

Question

Quizplus · Accepted Answer

A muscle that crosses the metacarpophalangeal and/or interphalangeal joints of the fingers posteriorly will be oriented in a way that restrains or slows down the flexion of the fingers. This is because eccentric contraction occurs when the muscle lengthens while under tension, which means that it creates resistance to the movement of the finger towards the palm. Therefore, the best choice is A) restrains/slows flexion.

If a Muscle Crosses the Metacarpophalangeal And/or Interphalangeal Joints of the Fingers