TPR FL 2 Bio section

[akimhaneul]

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I am quite confused about #36. For choice B it talks about fluid retention in the lower extremities. Why would this occur?

Also, how does being in recumbent position affect shortness of breath in general? I guess I don't understand 36 in general.

For #40, why would tropomyosin be in serum? I thought it was something that is attached to actin of muscle cells?


Answers are D for both 36 and 40.


Thank you!

 

[jtd2081]

Are you saying the correct answers to both of these questions is D?

 

[rhinzaz]

I would argue that #40 is B) and not D), since aldosterone is considered to be a steroid hormone and not a peptide hormone as per question stem (but would likely be found in increased concentration due to RAAS). ANP (or ProNTBnp) is a peptide usually also found upregulated in cardiac disease patients (in a clinical setting it is actually a known biomarker for cardiac disease prognosis). Troponin/Tropomyosin are involved in muscle contraction and bound to actin yes, can you think of why a patient with cardiac hypertrophy would be expected to have higher concentrations of those muscle elements?