BIO-17 Chapter Notes - Chapter 1: Posterior Clinoid Processes, Spinal Cord, Petrous Part Of The Temporal Bone
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3)mobility of intracranial / intraspinal membranes (reciprocal tension) 5)involuntary motion of sacrum between ilia: 5 poles of attachment of the dural membrane. The falx attaches to the cristi galli of the ethmoid and to the frontal crest. The tentorium attaches to the anterior and posterior clinoid processes of the sella turcica: lateral poles. The tentorium attaches to the petrous ridge of the temporal bone and the transverse ridge of the occiput. The dura exits the foramen magnum attaches to c2 and then hangs loosely until it attaches to the s2 sacral segment. Primary respiratory mechanism (prm: expansion and contraction of the cns. Discussed in relation to what happens at the major keystone joint of the cranial mechanism (the sbs: sbs -- sphenobasilar synchondrosis, during the expansion phase the sbs flexes, during the contraction phase the sbs extends. Axes of motion for sphenoid and occiput: ap axis ( 1 axis) From nasion through sbs to opisthion: vertical axes (2 axes)
