KROK 1 2021 – Question 46 · KROK (Medicine) · Biological Chemistry
Oxygen supply of skeletal muscles during their intensive work is often problematic because of compressed vessels and disrupted blood flow. What supplies muscles with oxygen in this case?
- A. Hemoglobin
- B. Cytochrome
- C. Creatine phosphate
- D. Myoglobin
- E. Calmodulin
Hint
Think about where a muscle fibre can keep a small oxygen reserve of its own when blood flow is interrupted, and compare the oxygen affinity of that store with that of blood.
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