With cranial flexion, the sacral base moves in which direction?

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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

With cranial flexion, the sacral base moves in which direction?

Explanation:
When the cranial bones flex, the SBS moves upward, but the dura mater linking the skull to the sacrum pulls the sacrum in the opposite direction. This creates a posterior tilt of the sacral base, called counternutation. So, during cranial flexion the sacral base moves backward relative to the pelvis. An anterior tilt of the sacral base would occur with cranial extension, not flexion.

When the cranial bones flex, the SBS moves upward, but the dura mater linking the skull to the sacrum pulls the sacrum in the opposite direction. This creates a posterior tilt of the sacral base, called counternutation. So, during cranial flexion the sacral base moves backward relative to the pelvis. An anterior tilt of the sacral base would occur with cranial extension, not flexion.

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