Proximal Convoluted Tubule (PCT) in Biology
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Questions and Answers

Wat is de functie van de distale convoluted tubulus (DCT)?

  • Reabsorptie van water en natrium
  • Geen specifieke functie in de nierfunctie
  • Secretie van water en kalium
  • Reabsorptie van natrium, chloride en calcium (correct)

Hoe beïnvloedt thiazide de werking van de DCT?

  • Het verhoogt natrium secretie
  • Het vergroot de werking van de Na-K-ATPase
  • Het heeft geen invloed op de DCT
  • Het vermindert calcium reabsorptie (correct)

Welk kanaal bevindt zich in de DCT en is verantwoordelijk voor kaliumsecretie?

  • Chloride kanaal
  • Water kanaal
  • Na-K-2Cl cotransporter
  • Natrium-Kalium pomp (correct)

Wat is de belangrijkste functie van de distale gekronkelde buis?

<p>Regulering van de terugresorptie van chloor en natrium (B)</p> Signup and view all the answers

Welk kanaal of transporter bevindt zich niet in de distale gekronkelde buis volgens de tekst?

<p>Glucose transporter (B)</p> Signup and view all the answers

Welk type resorptie kan alleen plaatsvinden in het rechte deel van de tubulus van Henle?

<p>Passieve resorptie van water (A)</p> Signup and view all the answers

Wat is de functie van de distale convoluted tubule (DCT)?

<p>Reabsorptie van water en reabsorptie of secretie van natrium, kalium, waterstof en bicarbonaat (C)</p> Signup and view all the answers

Welk type nefron heeft een lange lis van Henle?

<p>Juxtamedullaire nefron (A)</p> Signup and view all the answers

Wat is een unieke eigenschap van de vascularisatie van een nefron?

<p>Het heeft meerdere capillaire overgangen (A)</p> Signup and view all the answers

Welke epitheelcel heeft microvilli?

<p>Proximale epitheelcel (D)</p> Signup and view all the answers

Flashcards

Distal Convoluted Tubule (DCT) Function

Responsible for reabsorbing water and managing the exchange of sodium, potassium, hydrogen and bicarbonate.

Thiazide Effect on DCT

Thiazide diuretics can reduce calcium reabsorption in the DCT, potentially impacting bone health.

K+ Secretion in DCT

The Na+/K+ pump in the DCT plays a key role in the secretion of potassium from the body.

DCT's Main Function

The DCT's primary role is adjusting the reabsorption of sodium and chloride to regulate blood volume and electrolyte balance.

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Absent Glucose Transporter in DCT

Glucose transporters are not present in the DCT, indicating that glucose reabsorption primarily occurs in the proximal tubule.

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Passive Water Reabsorption

Passive reabsorption of water in the descending limb helps concentrate urine by moving water out of the tubule, driven by the concentration gradient.

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Juxtamedullary Nephron Length

Juxtamedullary nephrons have longer loops of Henle that extend deep into the medulla, contributing to the concentration of urine.

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Unique Nephron Vascularization

The vascularization of a nephron features multiple capillary transitions, allowing for intricate exchange of substances between blood and tubule fluid.

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Proximal Epithelium Microvilli

The proximal tubule epithelium, lined with microvilli, increases surface area for efficient absorption of nutrients and water.

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