KROK 1 2016 – Question 79 · KROK (Medicine) · Physiology
10 minutes after the beginning of heavy physical work a person demonstrates increase of erythrocyte number in blood from 4,0 · 10¹²/l to 4,5 · 10¹²/l. What is the cause of this phenomenon?
- A. Suppression of erythrocyte destruction
- B. Erythrocytes exit from depot
- C. Erythropoiesis activation
- D. Increase of cardiac output
- E. Water loss
Hint
Compare how quickly each listed mechanism can change the red cell count, and which of them could plausibly act within ten minutes of starting exertion.
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