Question

Na+ most abundant ion in filtrate; lots of energy used to reabsorb it (return it to the blood). It occurs through --------------- pump. Glucose is co-transported by sodium-glucose transport proteins.

a. Na+-K+ Pump
b. Na++K+ Pump
c. Na+-K- Pump

Answer 1

Sodium reabsorption in the kidney occurs through the Na-glucose symport protein.

Step-by-step explanation:

Tubular reabsorption occurs in the PCT part of the renal tubule. Sodium (Na+) is the most abundant ion and is reabsorbed by active transport. This reabsorption of Na+ occurs through the Na+-glucose symport protein, which simultaneously transports Na+ ions and glucose molecules in the same direction towards the interstitial space.