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Podocytes Structure and Function

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Questions and Answers

What is the primary function of the juxtaglomerular apparatus?

Regulating sodium and water reabsorption

Controlling renin secretion and blood pressure (correct)

Producing erythropoietin

Filtering blood and forming urine

Which component of the juxtaglomerular apparatus is responsible for sensing changes in blood pressure?

Distal convoluted tubule

Extraglomerular mesangial cells

Juxtaglomerular cells (correct)

Macula densa

What is the primary function of the macula densa?

Regulating glomerular filtration rate

Producing erythropoietin

Sensing sodium concentration in the distal tubule (correct)

Detecting changes in blood pressure

Which cells in the kidney interstitium are thought to be the primary site of erythropoietin production?

Peritubular cells in the cortex Signup and view all the answers

What is the function of the interstitial cells in the medulla?

Synthesizing a vasodilator hormone Signup and view all the answers

What happens when the blood pressure falls, affecting the juxtaglomerular cells?

The juxtaglomerular cells secrete more renin Signup and view all the answers

What is the relationship between the extraglomerular mesangial cells and the juxtaglomerular apparatus?

The extraglomerular mesangial cells are continuous with the glomerular mesangium at the vascular pole of the glomerulus Signup and view all the answers

Which statement about the juxtaglomerular apparatus is correct?

Its components work together to control blood pressure Signup and view all the answers

Which component of the juxtaglomerular apparatus is sensitive to changes in sodium concentration?

Macula densa Signup and view all the answers

What is the primary function of the interstitial cells in the kidney?

Synthesizing hormones that affect vascular tone Signup and view all the answers