National Physical Therapy Examination (NPTE) Practice Exam 2025 – The All-in-One Guide to Exam Success!

Question: 1 / 555

What muscle group is responsible for causing right trunk rotation?

Left external oblique and left internal oblique

Right external oblique and right internal oblique muscles

Right external oblique muscles and left internal oblique muscles

Left external oblique and right internal oblique

To understand trunk rotation, it is essential to recognize how the muscles work in pairs during this movement. Right trunk rotation specifically involves muscles on both sides of the trunk.

The left external oblique and right internal oblique work together to facilitate right rotation of the trunk. The left external oblique, when contracting, pulls the body forward and downward across the midline, while the right internal oblique supports this action by contracting inward towards the midline. This coordinated contraction allows for the effective rotation to the right.

The other combinations presented do not facilitate the same mechanism for right trunk rotation. For example, the right external oblique muscles would primarily assist in left rotation when acting alone. Therefore, option D correctly identifies the muscle group involved in causing right trunk rotation through their synergistic action.

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