The sodium-potassium pump operates on the apical side of the renal tubular cells to directly transport glucose into the bloodstream.
True
False
The Correct Answer is B
B. False: The Na+/K+ ATPase pump is localized exclusively to the basolateral membrane of renal tubular epithelial cells. It maintains a low intracellular sodium concentration, which drives secondary active transport of glucose via SGLT proteins on the apical side. It does not transport glucose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
B. False: The insertion of aquaporin-2 channels into the apical membrane is strictly dependent on the presence of antidiuretic hormone. Without this hormonal signal, the channels are internalized into endosomes, making the membrane impermeable to water. This allows for the excretion of large volumes of dilute urine.
Correct Answer is B
Explanation
B. False: Antidiuretic hormone is synthesized in the hypothalamus and released by the posterior pituitary gland. Its primary function is to decrease urine output by increasing water reabsorption in the renal collecting ducts. This process conserves systemic water and concentrates the final urine.
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