Q:

The proximal convoluted tubules

safaTerkawi
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2022-08-11
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 The proximal convoluted tubules.

  1. Reabsorb most of the sodium ions in glomerular filtrate.
  2. Reabsorb most of the chloride ions in glomerular filtrate.
  3. Reabsorb most of the potassium ions in glomerular filtrate.
  4. Contain juxtaglomerular cells which secrete rennin.
  5. Contain the main target cells for antidiuretic hormone.
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safaTerkawi
2022-08-11
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A. True More than half of the filtered sodium is actively absorbed in the proximal tubules.

B. True Negatively charged chloride ions follow the positively charged sodium.

C. True Most of the potassium is reabsorbed in the proximal tubule; some is re-excreted in the distal tubules in exchange for sodium.

D. False Rennin is an enzyme found in gastric juice that causes milk to clot. The juxta-glomerular cells that secrete renin are found where the distal tubule makes contact with the afferent arteriole.

E. False This hormone acts mainly on distal parts of the nephron.

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