The ability to extend a leg is the result of
A) contraction of ligaments and tendons.
B) contraction of a muscle.
C) lengthening of a muscle.
D) a combination of push and pull by antagonistic muscle pairs.
E) relaxation of myosin and actin proteins.

Question

Quizplus · Accepted Answer

The extension of a leg is primarily due to the contraction of a muscle, specifically the quadriceps muscle group, which straightens the knee joint.

The Ability to Extend a Leg Is the Result of