Ventricular System, CSF & Blood-Brain Barrier

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Last updated 9:46 PM on 8/24/26
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9 Terms

1
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What is the purpose of the ventricular system?

• Protect brain
• Nourish brain
• Circulate CSF

2
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How many ventricles are in the brain?

• 4 ventricles

3
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What structure produces CSF?

Choroid plexus

4
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What are the major functions of CSF?

• Cushions brain/spinal cord
• Mechanical support/buoyancy
• Nutrition
• Removal of metabolites

5
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Approximately how much CSF is produced per day?

• Approximately 500–700 mL/day

6
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What is hydrocephalus?

• Excess CSF within brain ventricles
• Causes ventricular enlargement

7
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What is syringomyelia?

• Excess/fluid-filled cavity within the spinal cord

8
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What structures form the blood-brain barrier?

• Meninges
• Protective glial cells
• Capillary beds

9
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What is the function of the blood-brain barrier?

• Regulates exchange between CNS and vascular system
• Restricts certain molecules from entering CNS