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Describe the physiological role and mechanism of extrinsic regulation of GFR?
Extrinsic regulation of glomerular filtration rate (GFR) involves factors outside the kidney that influence renal blood flow and GFR. For example, the sympathetic nervous system can constrict renal blood vessels, reducing GFR to shunt blood to other organs during fight or flight responses. Hormones like angiotensin II and natriuretic peptides also regulate GFR by altering renal blood flow and tubular reabsorption.
How does low blood pressure effect the flow of fluid through the renal tubules?
Low blood pressure means the blood flow through the circulation system has been delayed. As a result, blood flow goes through the Renal tubules will be effected. Blood goes through that tube won't be much. Hence, Blood will be slowed when it passes by the renal tubules.
What is the blood flow from kidney to diaphragm?
The blood flow from the kidney to the diaphragm follows the path of the renal artery carrying oxygenated blood to the kidney for filtration. Once the blood is filtered in the kidney, it travels back to the heart through the renal vein. From the heart, the blood is pumped to the lungs for oxygenation and then circulated to the diaphragm and the rest of the body.
What is renal blood supply?
Renal blood supply refers to the blood flow that is directed to the kidneys. The kidneys receive approximately 20% of the cardiac output to ensure they are adequately perfused for their vital functions, such as filtering blood and maintaining fluid balance. The renal arteries deliver oxygenated blood to the kidneys, which then pass through a system of smaller vessels before being collected and carried away by the renal veins.
What is renal ischmia?
Renal ischemia refers to inadequate blood flow to the kidneys, which can result in reduced oxygen and nutrient delivery to the kidney tissues. This condition can lead to kidney damage and impaired kidney function if not addressed promptly. Causes of renal ischemia can include blockages in blood vessels or decreased blood flow due to conditions like atherosclerosis.
Would vasoconstriction of the renal arteries decrease blood flow to the kidneys?
Yes. If you constrict the afferent arteriole then renal blood flow will decrease.
How does blood flow through the brain to the heart?
trace blood flow through the kidney from the renal artery to the renal vein? blood flow through kidney from renal artery to the renal vein
Myogenic mechanism of renal autoregulation?
The myogenic mechanism occurs whenstretching triggers contraction of smooth muscles in the wall of arterioles to normalize blood flow and GFR (glomerular filtration rate) by increasing or decreasing blood pressure. N.B. i rephrased the concept a little bit.source: principle of A&P by Tortora & Derrickson
How much is renal blood flow?
It equals 20% of cardiac output Cardiac Output = 5 L/min so renal blood flow is 1 L/min
What is a Machine that controls renal blood flow?
I think dialysis
What is widely patent renal veins?
Widely patent renal veins refer to renal veins that are open and unobstructed, allowing for normal blood flow from the kidneys to the inferior vena cava. This condition is crucial for proper kidney function, as any blockage or narrowing can lead to complications such as renal vein thrombosis. Maintaining widely patent renal veins is essential for adequate drainage of deoxygenated blood from the kidneys, which helps regulate blood pressure and fluid balance in the body.
Describe the physiological role and mechanism of extrinsic regulation of GFR?
Extrinsic regulation of glomerular filtration rate (GFR) involves factors outside the kidney that influence renal blood flow and GFR. For example, the sympathetic nervous system can constrict renal blood vessels, reducing GFR to shunt blood to other organs during fight or flight responses. Hormones like angiotensin II and natriuretic peptides also regulate GFR by altering renal blood flow and tubular reabsorption.
Why do they have to keep giving blood for renal artery?
this is because the decrease in blood flow to the kidney will trigger the RENIN ANGIOTENSIN mechanism, which stimulates the Increase of Arterial Blood Pressure to get the kidney more blood, also the kidney one tof the sensetive organs to ischemia
What part of the kidney controls renal blood flow?
Juxtaglomerular apparatus
Which substance is both filtered and secreted by the nephron and is therefore used to measure the renal plasma flow and estimate the total renal blood flow?
Para-aminohippuric acid (PAH) is both filtered and actively secreted in the nephron. It is used to measure renal plasma flow and estimate total renal blood flow due to its ability to be completely extracted by the kidneys.
What blocks blood flow to the kidneys?
The kidneys need a good blood supply. The main artery to the kidney is called the renal artery. Reduced blood flow through the renal artery can hurt kidney function. A complete blockage of blood flow to the kidney can often result in permanent kidney failure.
How does low blood pressure effect the flow of fluid through the renal tubules?
Low blood pressure means the blood flow through the circulation system has been delayed. As a result, blood flow goes through the Renal tubules will be effected. Blood goes through that tube won't be much. Hence, Blood will be slowed when it passes by the renal tubules.
