If it were possible to have antagonistic muscle pairs in an arm contract simultaneously, what movement would the arm make?
A) The arm would move away from the body.
B) The arm would move toward the body in a curling movement.
C) The arm would be locked in position.
D) The arm could move easily in each direction.

Question

Quizplus · Accepted Answer

When antagonistic muscle pairs contract simultaneously, they would create tension in opposite directions, which would result in the arm being locked in position and unable to move in any direction. This is because the opposing forces would cancel each other out, causing the arm to remain stationary. Therefore, choice C is the correct answer.

If It Were Possible to Have Antagonistic Muscle Pairs in an Arm