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Renal blood flow is a)1% of cardiac output b)20% of cardiac output c)30% of cardiac output d)40% of cardiac output Correct option is (b) Can you explain this answer?
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Renal blood flow is a)1% of cardiac output b)20% of cardiac output c)3...
Renal blood flow is 20% of cardiac output
Renal blood flow refers to the volume of blood that passes through the kidneys per unit time. It is an important parameter that helps in the regulation of renal function and maintenance of fluid and electrolyte balance in the body. The renal blood flow is determined by various factors such as blood pressure, renal vascular resistance, and hormonal regulation.
Factors affecting renal blood flow
1. Blood pressure: Renal blood flow is directly proportional to the blood pressure in the renal artery. When the blood pressure increases, the renal blood flow also increases and vice versa.
2. Renal vascular resistance: The resistance offered by the renal blood vessels affects the renal blood flow. When the resistance is high, the renal blood flow decreases and vice versa.
3. Hormonal regulation: Hormones such as angiotensin II and prostaglandins play an important role in regulating renal blood flow.
Calculation of renal blood flow
Renal blood flow can be calculated by using the following formula:
Renal blood flow = Renal plasma flow / (1 – hematocrit)
The normal renal blood flow in an adult human is around 1.2 L/min or 20% of the cardiac output, which is around 6 L/min. This indicates the importance of the renal circulation in maintaining the overall health of the body.
Importance of renal blood flow
1. Regulation of blood pressure: The kidneys play a crucial role in the regulation of blood pressure by adjusting the renal blood flow and the release of hormones such as renin.
2. Removal of waste products: The renal blood flow helps in the removal of waste products such as urea, creatinine, and uric acid from the body.
3. Maintenance of fluid and electrolyte balance: The renal blood flow helps in the maintenance of fluid and electrolyte balance in the body by regulating the reabsorption and excretion of water and electrolytes.
Conclusion
In conclusion, the renal blood flow is an important parameter that helps in the regulation of renal function and maintenance of fluid and electrolyte balance in the body. The normal renal blood flow in an adult human is around 1.2 L/min or 20% of the cardiac output, which indicates the importance of the renal circulation in maintaining the overall health of the body.
Renal blood flow refers to the volume of blood that passes through the kidneys per unit time. It is an important parameter that helps in the regulation of renal function and maintenance of fluid and electrolyte balance in the body. The renal blood flow is determined by various factors such as blood pressure, renal vascular resistance, and hormonal regulation.
Factors affecting renal blood flow
1. Blood pressure: Renal blood flow is directly proportional to the blood pressure in the renal artery. When the blood pressure increases, the renal blood flow also increases and vice versa.
2. Renal vascular resistance: The resistance offered by the renal blood vessels affects the renal blood flow. When the resistance is high, the renal blood flow decreases and vice versa.
3. Hormonal regulation: Hormones such as angiotensin II and prostaglandins play an important role in regulating renal blood flow.
Calculation of renal blood flow
Renal blood flow can be calculated by using the following formula:
Renal blood flow = Renal plasma flow / (1 – hematocrit)
The normal renal blood flow in an adult human is around 1.2 L/min or 20% of the cardiac output, which is around 6 L/min. This indicates the importance of the renal circulation in maintaining the overall health of the body.
Importance of renal blood flow
1. Regulation of blood pressure: The kidneys play a crucial role in the regulation of blood pressure by adjusting the renal blood flow and the release of hormones such as renin.
2. Removal of waste products: The renal blood flow helps in the removal of waste products such as urea, creatinine, and uric acid from the body.
3. Maintenance of fluid and electrolyte balance: The renal blood flow helps in the maintenance of fluid and electrolyte balance in the body by regulating the reabsorption and excretion of water and electrolytes.
Conclusion
In conclusion, the renal blood flow is an important parameter that helps in the regulation of renal function and maintenance of fluid and electrolyte balance in the body. The normal renal blood flow in an adult human is around 1.2 L/min or 20% of the cardiac output, which indicates the importance of the renal circulation in maintaining the overall health of the body.
Community Answer
Renal blood flow is a)1% of cardiac output b)20% of cardiac output c)3...
Renal blood flow means the volume of blood recieved by kidneys/delivered to kidneys per unit time=1.2 -1.3L/min
cardiac output is equal to volume of blood pumped by heart ventricles per minute=4-8 L/min
i.e it is 20-25%of cardiac output
cardiac output is equal to volume of blood pumped by heart ventricles per minute=4-8 L/min
i.e it is 20-25%of cardiac output
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