Active transport of substances from the blood into the nephron is called
A) filtration.
B) tubular reabsorption.
C) tubular secretion.
Answer: C
Urinary System
- The micturition reflex
- When the tubular load of a substance exceeds the tubular maximum, that substance will
- Angiotensin II causes
- Which of these conditions increases the amount of urine produced?
- Drinking a large amount of beer results in
- Juxtaglomerular cells secrete
- Urea diffuses out of the __________ , and into the __________ .
- The countercurrent multiplier mechanism of the nephron is in the
- Which of these substances is actively transported into the filtrate in the proximal and distal tubule?
- Renal tubules are __________ permeable to urea than they are to water, therefore urea concentration in the tubules __________ .
- At which of these locations is the osmolality of the filtrate the highest?
- All of these compounds are reabsorbed from the filtrate back into the blood EXCEPT
- The permeability of the distal tubule and the collecting duct is controlled by
- These ions are cotransported across the apical membrane in the ascending limb of the loop of Henle.
- The percentage of filtrate volume reabsorbed in the proximal tubule is
- The ascending limb of the loop of Henle is __________ to water.
- In kidney nephron epithelial cells, __________ are moved by counter transport through the basal membrane in exchange for K+ ions.
- In kidney nephron epithelial cells, solutes are cotransported with
- During tubular reabsorption in the proximal tubule of the nephron, most solutes are moved across the apical membrane by __________ , and across the basal membrane by __________ .
- As filtrate moves through the thin segment of the descending limb of the loop of Henle, water moves __________ the nephron, and solutes move __________ the nephron.
- A decrease in plasma proteins results in
- Of the filtrate that enters the nephron, about what percent is reabsorbed during urine formation?
- Which of these substances normally cannot pass through the filtration membrane?
- The part of the plasma volume that passes through the filtration membrane is the
- The part of the total cardiac output that passes through the kidneys is called the