During the motion that extends the upper limb at the elbow, the triceps brachii represents which part of the lever?
A) Rigid bar
B) Fulcrum
C) Force
D) Resistance
E) Handle

Question

Quizplus · Accepted Answer

During the motion that extends the upper limb at the elbow, the triceps brachii acts as the force (or effort) in the lever system. The muscle contracts to generate the force needed to extend the arm, overcoming the resistance (weight of the forearm and any object being held).

During the Motion That Extends the Upper Limb at the Elbow