Internal/external rotation, horizontal abduction/adduction, and axial rotation occur in which plane?

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Multiple Choice

Internal/external rotation, horizontal abduction/adduction, and axial rotation occur in which plane?

Explanation:
Rotational movements occur in the horizontal (transverse) plane. Internal and external rotation, axial rotation, and horizontal abduction/adduction all involve turning a segment around its long axis, which happens within this plane that divides the body into top and bottom parts. The terms horizontal plane and transverse plane are interchangeable, so recognizing these as rotations in that plane explains why this option is the best. Sagittal and frontal planes describe flexion/extension and abduction/adduction movements in straight lines, not the rotational actions listed.

Rotational movements occur in the horizontal (transverse) plane. Internal and external rotation, axial rotation, and horizontal abduction/adduction all involve turning a segment around its long axis, which happens within this plane that divides the body into top and bottom parts. The terms horizontal plane and transverse plane are interchangeable, so recognizing these as rotations in that plane explains why this option is the best. Sagittal and frontal planes describe flexion/extension and abduction/adduction movements in straight lines, not the rotational actions listed.

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