Sandy, good evening I hope you are well and having a great night. With regard to your question, consider the following. As you are learning in the module a lever is defined as a rigid bar that turns about an axis of rotation or fulcrum. In the body, the bones represent the bars, the joints the axes and the muscles contract to apply the force. More importantly, it is the arrangement of these points and the direction in which the force is being applied during the CONCENTRIC contraction, which will determine the type of lever
We hope this helps to ease your mind as you continue with your studies.
