Concept explainers
To discuss:
Substances added to the tubular fluid by tubular secretion in the PCT.
Introduction:
In the whole of the glomerular filtrate, about 65% are reabsorbed by the proximal convoluted tubule. The proximal convoluted tubule removes wastes present in the blood and excretes them through the urine. Due to the presence of microvilli (its greater length), the proximal convoluted tubule has the benefits of increasing its surface area for absorption. Proximal convoluted tubule cells are equipped with a rich source of large mitochondria that produce ATP, which supports active transport. Of all the calories that are consumed in a day, only 6% of ATP is needed by the proximal convoluted tubule.
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Chapter 23 Solutions
ANATOMY & PHYSIOLOGY THE UNITY OF FORM A
- A urinalysis reveals that the patients urine contains glucose, hemoglobin, and white blood cells (pus). Are any of these substances abnormal in urine? Explain.arrow_forwardWhy would the differential renal vein renin test show an increase in the blocked renal artery side secretion of renin, yet a drop in renin levels on the other (normal) side?arrow_forwardExplain the change in filtration if excess glucose is presentin the blood entering the kidney.arrow_forward
- acute kidney failure in adultsarrow_forwardIn renal tubular failure, serum levels of B2 microglobulin are decreased and urine levels are increased. True or Falsearrow_forwardIf renal plasma clearance value of substance X Is 55 mL/min, that means Multiple Cholce that 55 ml of substance X Is filtered. that 55 ml of substance X Is reabsorbed. that 70 ml of substance X Is filtered that 70 ml of substance X Is reabsorbed.arrow_forward
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage LearningHuman Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
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