What mechanism is responsible for the destruction of the majority of normal senescent erythrocytes?
a. Intravascular hemolysis
b. Rupture by complement
c. Phagocytosis by peripheral neutrophils
d. Phagocytosis by splenic macrophages
ANS: D
As red cells become old (senescent), changes occur in the membrane and intracellularly that lead to their phagocytosis by macrophages in the spleen.
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Generally, children ranging in age from _________________ to _________________ believe that death is a temporary state and may ask continually when the dead person will return
Fill in the blank(s) with correct word
A 49-year-old man has been stabbed in the lower right chest. Police on scene report that the patient got into an argument with an unidentified man, who then stabbed him before fleeing the scene. After assessing the patient, you are suspicious that the knife punctured the lung and is causing internal bleeding. In this situation, the mechanism of injury would be:
A) blunt trauma to the lungs. B) assailant with a knife. C) internal hemorrhage. D) stab wound to the right chest.
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Endotoxin means which of the following?
A. a toxin found in the blood B. a toxin found on the surface of the skin C. a toxin found in the stomach D. a toxin within the body of a bacterium