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8 Cards in this Set
- Front
- Back
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What protects the nervous tissue of the brain from the general circulation?
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blood-brain barrier
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What creates the blood-brain barrier?
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astrocytes
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What 3 locations do not have astrocytes that envelop brain capillaries and reduce capillary permeability?
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Choroid plexi, hypothalamus, and the pineal gland
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Why would a reduction or missing blood-brain barrier in the choroid plexi important?
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So they have necessary permeability to produce CSF
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Why is it important that the hypothalamus and the pineal gland have a reduction or missing?
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So these endocrine glands have access to the blood stream to directly releae their hormones into the plasma.
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what do the astrocytes do?
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envelop brain capillaries and reduce capillary permeability
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What type of compounds can diffuse across the capillary wall and into the fluids of the CNS to reach brain neurons?
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lipid-soluble compounds
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What 3 distinct locations in the CNS is the blood-brain barrier markedly reduced or missing?
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choroid plexi, hypothalamus, and the pineal gland
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