During the Flexion Phase, the paired cranial bones rotate in which direction?

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Multiple Choice

During the Flexion Phase, the paired cranial bones rotate in which direction?

Explanation:
In the flexion phase of the primary respiratory mechanism, the paired cranial bones rotate externally. This outward rotation of the parietal bones happens as the skull vault moves in flexion, with the bones turning so their outer aspects rotate away from the midline. It’s the opposite of the extension phase, where the paired bones rotate internally. So the rotation direction associated with flexion is external rotation.

In the flexion phase of the primary respiratory mechanism, the paired cranial bones rotate externally. This outward rotation of the parietal bones happens as the skull vault moves in flexion, with the bones turning so their outer aspects rotate away from the midline. It’s the opposite of the extension phase, where the paired bones rotate internally. So the rotation direction associated with flexion is external rotation.

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