8. In the sitting position, turn your head and upper body while keeping your lower body stationary. This movement is _______________________, and it occurs in the _______________________ plane about the _______________________ axis. The force producing this motion is a _______________________ force.
8. In the sitting position, turn your head and upper body while keeping your lower body stationary. This movement is _______________________, and it occurs in the _______________________ plane about the _______________________ axis. The force producing this motion is a _______________________ force.
9. Describe typical exercises or activities that apply:
A. A traction force through the upper extremities: ___________________________
B. An approximation force through the lower extremities: ___________________________
10. When bending the trunk to the left: ___________________________
A. On which side are structures compressed?
B. On which side are structures under tension? ___________________________
C. With the trunk erect, what force is applied to the structures of the trunk as the trunk is twisted to one side or the other? ___________________________
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