Cyanide is a chemical asphyxiant, which means that it:
A) interferes with the utilization of oxygen at the cellular level.
B) impairs pulmonary respiration by causing pulmonary edema.
C) destroys red blood cells and prevents red blood cell production.
D) binds to hemoglobin and prevents oxygen transport to the cells.
Answer: A) interferes with the utilization of oxygen at the cellular level.
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What is the waste product formed by the breakdown of pigment in old red blood cells?
A) Carbon dioxide B) Lactic acid C) Bilirubin D) Pyritic acid
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The short trunk that serves to receive deoxygenated blood from the major veins of the myocardium is the:
A) coronary artery B) coronary sinus C) coronary circumflex D) coronary branch
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