ANP 1106 Lecture Notes - Lecture 11: Dural Venous Sinuses, Arachnoid Mater, Dura Mater
8 Mar 2017
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Document Summary
From the foramen magnum to the 1st/2nd lumbar vertebra: below this is the ideal spot for a lumbar puncture. Two way conduction pathway to and from the brain. Major reflex centre: initiated and completed at the spinal cord level. Cervical and lumbar enlargements because there is more grey matter which contains everything that is necessary to move the limbs. The spinal cord is held in place by . Denticulate ligaments: saw toothed shelves of pia mater. Secure spinal cord to dura mater meninx throughout its length. Filium terminale: pia mater covered conus extension. Cauda equina: collection of nerve roots at the inferior end of the vertebral canal. Named this because it looks like a horse"s tail. Grey matter is same as rest of cns: but all neurons are multipolar. Paired anterior (ventral) and posterior (dorsal) horns connected by gray commissure which encloses the central canal. Small lateral horns associated with thoracic and superior lumbar regions of cord.
