Which muscles are responsible for right trunk rotation?

Which muscles are responsible for right trunk rotation?

• A. Right External Oblique and Left Internal Oblique
• B. Right Internal Oblique and Left Internal Oblique
• C. Left External Oblique and Right Internal Oblique
• D. Left Internal Oblique and Right External Oblique

Answer: (C)

The correct answer identifies the muscles involved in right trunk rotation. The trunk rotates to the right when the right internal oblique muscle contracts. This muscle, located on the right side of the abdomen, aids in pulling the torso toward the right. Additionally, the left external oblique contributes to this rotational movement. The left external oblique works synergistically with the right internal oblique to rotate the trunk towards the right side by contracting through the left side of the body. This dual action creates the necessary torque for right trunk rotation. In summary, the combination of the left external oblique and the right internal oblique provides effective rotation of the trunk to the right, making this choice the correct determination for the muscles responsible for that movement.

The correct answer identifies the muscles involved in right trunk rotation. The trunk rotates to the right when the right internal oblique muscle contracts. This muscle, located on the right side of the abdomen, aids in pulling the torso toward the right.

Additionally, the left external oblique contributes to this rotational movement. The left external oblique works synergistically with the right internal oblique to rotate the trunk towards the right side by contracting through the left side of the body. This dual action creates the necessary torque for right trunk rotation.

In summary, the combination of the left external oblique and the right internal oblique provides effective rotation of the trunk to the right, making this choice the correct determination for the muscles responsible for that movement.