Human Skeletal Lever Classification Model

The human skeletal lever classification model consists of the sagittal section of the skull (including the mandible), the sagittal section of the 1st to 5th cervical vertebrae, the lower segments of the tibia and fibula, the talus, the humerus, the forearm bones, and the hand bones (demonstrating the scaphoid, capitate, third metacarpal, and middle phalanx). These bones are connected according to their lever types and labeled with terms such as fulcrum, effort point, and resistance point. This allows for the observation of the conceptual classification of human skeletal levers and the roles of the three types of levers in transmitting force, balancing force, conserving effort, and increasing the range and speed of motion.