Q:

The oxygen content of mixed venous blood is

safaTerkawi
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2022-08-08
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The oxygen content of mixed venous blood is.

  1. Measured using blood sampled from the right atrium.
  2. Increased during generalized muscular exercise.
  3. Increased in a warm environment.
  4. Increased in cyanide poisoning.
  5. Decreased in circulatory failure.
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safaTerkawi
2022-08-08
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 A. False For adequate mixing, pulmonary artery blood is needed.

B. False It falls due to increased oxygen extraction by the active muscles.

C. True Due to large volumes of well oxygenated blood returning from skin.

D. True Cyanide blocks uptake of oxygen by tissue enzyme systems.

E. True Oxygen extraction is increased in stagnant hypoxia.

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