Question

Most of the skeletal muscles in our bodies are part of ______ lever systems.

a. first-class
b. second-class
c. third-class
d. All of the above are equally distributed in our bodies.

Answer 1

Most of the skeletal muscles in our bodies are part of third-class lever systems.

Step-by-step explanation:

Most of the skeletal muscles in our bodies are part of third-class lever systems. In a third-class lever system, the effort (force) is applied between the fulcrum (joint) and the load (resistance). An example of a third-class lever in the human body is the flexion of the forearm by the biceps muscle.