20.5a Blood Pressure Gradient in the Systemic Circulation
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10 Terms
What is the blood pressure gradient in systemic circulation?
The difference between pressure in arteries near the heart and in the vena cava.
What are the typical pressure values in systemic circulation?
About 93 mm Hg in arteries and 0 mm Hg in the vena cava.
What is the systemic blood pressure gradient?
Approximately 93 mm Hg.
What is the function of the blood pressure gradient?
It drives blood through the vasculature.
Why is the blood pressure gradient important?
It ensures continuous blood flow throughout the body.
What happens when the pressure gradient increases?
Total blood flow increases.
What increases the blood pressure gradient?
Increased cardiac output.
How does cardiac output affect the pressure gradient?
Higher cardiac output raises arterial pressure, increasing the gradient.
What is the relationship between pressure gradient and blood flow?
They are directly related.
Which vessels represent the high and low ends of the gradient?
Arteries (high) and vena cava (low).