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Kidney Anatomy and Blood Flow

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Questions and Answers

What is the primary function of the nephron loop?

Prevent the diffusion of sodium into the plasma

Passively transport water across the tubule wall

Actively transport glucose into the plasma

Establish a vertical osmotic gradient in the renal medulla (correct)

What is the role of the glucose transporter (GLUT) in the process of urine formation?

Actively transports glucose across the membrane into the plasma

Pumps sodium along with glucose out of the cell

Facilitates passive diffusion of glucose into the plasma (correct)

Requires energy to facilitate glucose diffusion

How is the release of glucose facilitated by SGLT during urine formation?

By inhibiting the Na+/K+ pump activity

By actively transporting glucose into the cell interior

By creating an osmotic gradient in the tubules

By releasing glucose when Na+ is released (correct)

What allows the collecting ducts to produce urine with different concentrations?

The vertical osmotic gradient established by the nephron loop Signup and view all the answers

Why does water passively diffuse across the tubule wall in the loop of Henle?

Because it follows sodium and chloride movements Signup and view all the answers

What happens to sodium after being released by SGLT during urine formation?

It is actively pumped out by Na+/K+ pump Signup and view all the answers

Which part of the nephron system creates an osmotic gradient in the medulla?

Nephron loop Signup and view all the answers

Why does urine formation occur at different locations in the nephron system?

To establish different urine concentrations Signup and view all the answers

Why can't water be actively transported across the tubule wall during urine formation?

In order to allow for passive diffusion via osmosis Signup and view all the answers

Why is it important for sodium to be pumped out quickly after being released by SGLT?

To prevent sodium accumulation within cells Signup and view all the answers