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Questions and Answers
What percentage of cardiac output typically contributes to cerebral blood flow in an adult human?
What do veins carry back to the heart in the cerebral circulation?
What may result from the failure of the safeguards in the cerebral circulatory system?
What safeguards does the cerebral circulatory system have to prevent damage from stoppage in blood supply?
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What is the volume of blood in circulation called in the context of cerebral circulation?
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Study Notes
Cerebral Circulation
- In an adult human, approximately 15-20% of cardiac output contributes to cerebral blood flow.
Blood Flow and Veins
- Veins in the cerebral circulation carry deoxygenated blood and metabolic waste back to the heart.
Failure of Cerebral Circulatory Safeguards
- Failure of the safeguards in the cerebral circulatory system may result in cerebral ischemia, hypoxia, or even stroke.
Safeguards in Cerebral Circulatory System
- The cerebral circulatory system has several safeguards to prevent damage from stoppage in blood supply, including:
- Autoregulation of blood flow
- Cerebral vasodilation
- Increased oxygen extraction
Blood Volume
- The volume of blood in circulation is referred to as blood volume, which is tightly regulated to ensure adequate blood flow to the brain.
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Description
Test your knowledge about the movement of blood through the network of cerebral arteries and veins supplying the brain, including the regulation of cerebral blood flow and the functions of arteries and veins.
