What are the dura attachments of the reciprocal tension membrane?

The reciprocal tension membrane is a crucial structure that connects the dura mater of the cranial cavity to the lower parts of the spinal cord. It plays a significant role in the movement and stability of the craniosacral system. The specific attachments of the dura mater that comprise the reciprocal tension membrane are at the foramen magnum, the second cervical vertebra (C2), the third cervical vertebra (C3), and down to the sacral level, specifically S2.

The foramen magnum serves as the initial attachment point at the base of the skull, where the dura is continuous with the spinal dura. The attachments at C2 and C3 support the dural connections towards the cervical spine, allowing for dynamic movement and maintaining tension throughout the craniosacral system. Finally, the S2 attachment signifies the end of the dural sheath, anchoring it to the sacrum. Therefore, this configuration allows for reciprocal movements between the cranial and sacral regions, essential for the physiological functions associated with craniosacral motion.

The other choices do not encompass the entire correct attachment range of the reciprocal tension membrane. By accurately identifying the foramen magnum, C2, C3, and S2 as the attachment points,