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Autoregulation of Renal Blood Flow

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Questions and Answers

What is the primary force driving filtrate formation in the glomerulus?

Blood pressure in the afferent arteriole

Capsular hydrostatic pressure

Glomerular hydrostatic pressure (correct)

Osmotic pressure of glomerular blood

What is the normal range of glomerular filtration rate (GFR) in a healthy individual?

120-150 ml/min

60-80 ml/min

90-130 ml/min (correct)

150-180 ml/min

What is the effect of increased glomerular filtration rate (GFR) on reabsorption of needed substances?

Variable effect on reabsorption of needed substances

Decreased reabsorption of needed substances (correct)

No effect on reabsorption of needed substances

Increased reabsorption of needed substances

Which of the following mechanisms is responsible for maintaining a nearly constant glomerular filtration rate (GFR) under normal conditions?

Renal autoregulation Signup and view all the answers

What is the net filtration pressure (NFP) in a healthy individual, assuming a glomerular hydrostatic pressure (HPg) of 55 mmHg, an osmotic pressure of glomerular blood (OPg) of 30 mmHg, and a capsular hydrostatic pressure (HPc) of 15 mmHg?

10 mmHg Signup and view all the answers

What is the effect of increased glomerular blood pressure on glomerular filtration rate (GFR)?

Increased GFR Signup and view all the answers

What is the primary function of the renal autoregulation mechanism?

To maintain a nearly constant glomerular filtration rate Signup and view all the answers

What is the effect of decreased glomerular filtration rate (GFR) on waste disposal?

Decreased waste disposal Signup and view all the answers

What is the relationship between glomerular filtration rate (GFR) and net filtration pressure (NFP)?

GFR is directly proportional to NFP Signup and view all the answers

What is the consequence of a glomerular filtration rate (GFR) higher than 130 ml/min?

Decreased reabsorption of needed substances Signup and view all the answers