Your friend nods "yes" to you,going through flexion,extension and hyperextension.This movement at the fulcrum represents a
A)first- class lever system
B)second- class lever system
C)third-class lever system.
D)third-class lever system

Question

Quizplus · Accepted Answer

In a first-class lever system, the fulcrum is positioned between the effort and the load, similar to the nodding motion of the head where the fulcrum is the atlanto-occipital joint.

Your Friend Nods "Yes" to You,going Through Flexion,extension and Hyperextension