What best describes the axis the occiput rotates around during flexion and extension?

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Prepare for the OMM 6 Cranial Evaluation and Treatment Test. Use flashcards and multiple-choice questions, each with hints and explanations. Get ready for your exam!

Multiple Choice

What best describes the axis the occiput rotates around during flexion and extension?

Explanation:
Flexion and extension of the head occur at the occipitoatlantal joint around a horizontal axis that runs left-to-right through the occipital region, located just above the foramen magnum. This transverse axis lets the occiput tilt forward and backward on the atlas (C1) as you nod or nod back. If the motion were about a vertical axis, you’d expect rotation like saying “no,” while other axes would produce motions that aren’t the primary nodding movement at this joint.

Flexion and extension of the head occur at the occipitoatlantal joint around a horizontal axis that runs left-to-right through the occipital region, located just above the foramen magnum. This transverse axis lets the occiput tilt forward and backward on the atlas (C1) as you nod or nod back. If the motion were about a vertical axis, you’d expect rotation like saying “no,” while other axes would produce motions that aren’t the primary nodding movement at this joint.

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