Podcast
Questions and Answers
What is the most distinctive characteristic of the proximal tubule?
What is the most distinctive characteristic of the proximal tubule?
- Presence of microvilli on the basal region
- Luminal brush border (correct)
- High quantity of cytoplasm
- Acidophilic appearance
What is the function of the microvilli in the proximal tubule?
What is the function of the microvilli in the proximal tubule?
- Regulate blood pressure
- Aid in waste excretion
- Increase the luminal surface area of the cells (correct)
- Facilitate cell division
Where are the mitochondria largely found in the cells of the proximal tubule?
Where are the mitochondria largely found in the cells of the proximal tubule?
- Apical region
- Cytoplasmic region
- Luminal surface
- Basal region within the infoldings of the basal plasma membrane (correct)
What is the segment of the nephron in kidneys that begins from the renal pole of the Bowman's capsule to the beginning of the loop of Henle?
What is the segment of the nephron in kidneys that begins from the renal pole of the Bowman's capsule to the beginning of the loop of Henle?
What cells lining Bowman’s capsule abruptly transition to proximal tubule epithelial cells?
What cells lining Bowman’s capsule abruptly transition to proximal tubule epithelial cells?
Study Notes
Proximal Tubule Characteristics
- The most distinctive characteristic of the proximal tubule is the presence of microvilli, which increase the surface area for reabsorption.
Microvilli Function
- Microvilli in the proximal tubule increase the surface area for reabsorption of nutrients and ions from the filtrate.
Mitochondria Location
- Mitochondria are largely found in the basal region of the cells in the proximal tubule, providing energy for the active transport of substances.
Proximal Tubule Segment
- The proximal tubule is the segment of the nephron that begins from the renal pole of the Bowman's capsule to the beginning of the loop of Henle.
Transition from Bowman's Capsule
- The cells lining Bowman's capsule, known as podocytes, abruptly transition to proximal tubule epithelial cells.
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Description
Test your knowledge of the nephron's proximal tubule with this quiz. Explore the structure and classification of the proximal tubule, including the proximal convoluted tubule (PCT) and more.
