Kaplan FL 1

[avalonisland888]

1) I was debating between A) and C). I know for sure that CO2 decreases the pH but I chose C in the end because I thought oxygen increases pH, and so by producing CO2, the body stabilizes the pH. Was this reasoning incorrect because O2 simply does not contribute to the pH?

2) I understand the answer to this question, but my question is about the explanation for Choice B). Can someone please explain to me how peritubular capillaries came into the picture?

3) From my understanding, increasing levels of PTH increases calcium levels in the blood. Since that's the case, why wouldn't high PTH levels warrant surgical therapy? The explanation confuses me.

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[GreenDuck12]

Question 1. CO2 decreases pH (acidic). The production of CO2 is the important part. O2 can raise the pH.

Question 3. The question asks what happens after removal and answer A is before removal. Answer A also states surgical removal is warranted by high PTH but the passage says surgical removal is warranted by high calcium. Answer B is the best answer.

 

[avalonisland888]

Question 1. CO2 decreases pH (acidic). The production of CO2 is the important part. O2 can raise the pH.

Question 3. The question asks what happens after removal and answer A is before removal. Answer A also states surgical removal is warranted by high PTH but the passage says surgical removal is warranted by high calcium. Answer B is the best answer.

Thank you!!

 

[avalonisland888]

Any help with my second question would be much appreciated )

 

[lumya]

2) The inactive products are excreted in the urine. Therefore you're not going to remove it from the nephron (which would mean it's being reabsorbed back into the bloodstream).

 

[avalonisland888]

2) The inactive products are excreted in the urine. Therefore you're not going to remove it from the nephron (which would mean it's being reabsorbed back into the bloodstream).

Oh my idk why I was confused about that haha thank you!