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Anatomy

Neurosurgery

QuestionAnswer
What is contained within the subarachnoid space? 1. CSF 2. cerebral arteries 3. superficial cerebral veins
Dentate ligaments Portion of the pia mater that stretches from midpoint between the dorsal and ventral roots of the lateral spinal cord surface to attach to the arachnoid and dura. Stabilizes the spinal cord.
What is the CSF content of: 1. glucose 2. protein 3. PMNs 1. 45-80 mg/dL (2/3 serum) 2. < 45 mg/dL 3. none
1. How much CSF is produced each day? 2. How much CSF is contained within the ventricles at one time? 1. 450 mL 2. 150 mL
Where is most of the CSF reabsorbed into the venous sinuses? arachnoid granulations at the superior sagittal sinus
At what pressure gradient will CSF be transmitted from collapsing tubules to the venous system? 3-6 cm H2O
What are the normal ICP values of: 1. adults 2. young children 3. infants 1. <10-15 mm Hg 2. 3-8 mm Hg 3. 1.5-6 mm Hg
1. Site that induces emesis when stimulated toxins in the blood. 2. Where in the brain is it located? 1. area postrema 2. fourth ventricle
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