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What structures does the brain consist of?
- 1)Cerebral hemispheres with cerebral cortex
- 2)Diencephalon-Thalamus, Hypothalamus, Epithalamus
- 3)Cerebellum
- 4)Brain Stem-Midbrain, Medulla Oblongata, Pons
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What are the three membranes that provide protection and their functions?
- 1)Dura Mater (Outermost): Strongest + Drains venous blood
- 2)Arachnoid Mater: Subarachnoid spaces contain CSF
- 3)Pia Mater: innermost clings to brain + contains blood vessels
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What is the BLOOD BRAIN BARRIER?
It serves as protection, O2 and glucose pass freely, regulates permeabilty, formed by tight juntions of ASTROCYTES.
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What is the role of CSF and it's Circulation?
- Protects from chemical and physical injury, Nourishes the brain, reduces weight by 97%,
- Formed in the choroid plexus.
- It circulates from the ventricles to the central canal of spinal cord, into the subarachnoid spaces, and finally back into blood.
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List the Ventricles and the cell that line them:
(2) Lateral, 3rd & 4th and are lined by ependymal cells.
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Characteristics of the Cerebral Cortex?
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