Which movement of the head & neck would lengthen the fibers of levator scapula on the right side of the body?

Which movement of the head & neck would lengthen the fibers of levator scapula on the right side of the body?

• A. Rotation to the left
• B. Rotation to the right
• C. Flexion
• D. Extension

Answer: (A)

The key idea here is that turning the head to one side places the muscles on the opposite side in a lengthened (stretched) position. The levator scapulae rises from the neck to the scapula, and when you rotate the head to the left, the right-sided fibers are pulled, increasing the distance along the muscle’s path. So the right levator scapulae fibers become lengthened as the head rotates away from them. In contrast, rotation to the right would shorten the right side, and flexion or extension mainly affect other neck muscles rather than placing the right levator scapulae in a lengthened state.

The key idea here is that turning the head to one side places the muscles on the opposite side in a lengthened (stretched) position. The levator scapulae rises from the neck to the scapula, and when you rotate the head to the left, the right-sided fibers are pulled, increasing the distance along the muscle’s path. So the right levator scapulae fibers become lengthened as the head rotates away from them. In contrast, rotation to the right would shorten the right side, and flexion or extension mainly affect other neck muscles rather than placing the right levator scapulae in a lengthened state.