Renal Tubular Transport #2. S1 Segment, Proximal Tubule. Sodium Transport 2 (Sodium/Phosphate Transport) (2nd Edition)
This is the second edition of the Renal Tubular Transport #2. S1 Segment, Proximal Tubule. Sodium Transport 2 (Sodium/Phosphate Transport) Click here for the 1st Edition. I have improved the number of phosphate transporters dependent on sodium.
The same electrochemical gradient generated by the Na/K ATPase mentioned in the previous post serves as the force behind the sodium/phosphate cotransporter
Here, we show the following in the apical membrane of the S1 segment of the proximal tubule.
- The NaPi-IIa cotransporter, which brings 3 sodium ions with 1 HPO42-
- The NaPi-IIc cotransporter, which brings 2 sodium ions with 1 HPO42- (not in S3 segment)
- The PiT-2 cotransporter, which brings 2 sodium ions with 1 H2PO4-
This will also be shown when we show the phosphate transport in a subsequent post
Previous Posts in this Series
Renal Tubular Transport #1. S1 Segment, Proximal Tubule. Sodium Transport 1
Renal Tubular Transport #2. S1 Segment, Proximal Tubule. Sodium Transport 2
Renal Tubular Transport #3. S1 Segment, Proximal Tubule. Sodium Transport 3
Renal Tubular Transport #4. S1 Segment, Proximal Tubule. Sodium Transport 4
Renal Tubular Transport #5. S1 Segment, Proximal Tubule. Sodium Transport 5
Renal Tubular Transport #6. S1 Segment, Proximal Tubule. Sodium Transport 6
Renal Tubular Transport #7. S1 Segment, Proximal Tubule. Sodium Transport 7
Renal Tubular Transport #8. S1 Segment, Proximal Tubule. Sodium Transport 8
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