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Occur in clusters called Choroid Plexus. Produce cerebreal spinal fluid (CSF). CSF bathes the CNS
3 Layers of tissue which surround the CNS.
1. Dura Layer - Tough Layer
2. Arachnoid- Middle Layer
2a. Subarchnoid-Area between Pia and Arachnoid contains fluid
3. Pia- Intimately attached to CNS
Alpha receptors react to what? what do they do?
React to Norepinephrine and regulate blood vessel dialation.
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