SUGER: Fine-tuning Flashcards Preview

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Flashcards in SUGER: Fine-tuning Deck (15)
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1
Q

Describe how the renal buffer system takes place in the PCT

A

Look in book

H+ is excreted in the blood via H+/Na+ counter-transport

HCO3- is secreted into the blood via HCO3-/Cl- countertransporter

2
Q

Describe how the renal buffer system takes place at the DCT

A

Look in book

H+ is now counter-exchanged with K+ ions here

A intercalated cells excrete H+ ions into the renal tubules

B intercalated cells excrete HCO3- ions into the renal tubules

H+ are re-absorbed by B intercalated cells via a H+/Na+ and H+/K+ countertransport

3
Q

Which intercalated cell is needed during metabolic acidosis

A

Intercalated A cells

4
Q

Which intercalated cell is needed during metabolic alkalosis

A

Intercalated B cells

5
Q

Where is glucose mainly re-absorbed

A

PCT

6
Q

How is glucose re-absorbed at the PCT

A

APICAL - Na+/Glucose counter-transport

BASOLATERAL - GLUT transporters

7
Q

Where is urea mostly re-absorbed at

A

PCT via passive transport

8
Q

Where is urea secreted into the renal tubules

A

Loop of Henle

9
Q

Where is urea partially re-absorbed at

A

Medullary collecting ducts

10
Q

Where is Na+ mainly re-absorbed at

A

PCT

11
Q

How is Na+ re-absorbed at the thick limb of the loop of henle

A

Na-K-2Cl symporter pumps

12
Q

How is Na+ re-absorbed at the DCT

A

Sodium-Chloride symporter

13
Q

How is sodium absorbed at the collecting ducts

A

Principal cells via aldosterone

14
Q

Where is potassium mostly absorbed

A

PCT (65%)

Some also at the THICK ascending limb via Na-K-2Cl symporters

15
Q

Role of the suspensory ligament

A

Carries OVARIAN arteries and veins (cardinal carries uterine artery and veins)