A student nurse learns that the spleen has several functions. What functions do they include? (Select all that apply.)
a. Breaks down hemoglobin
b. Destroys old or defective red blood cells (RBCs)
c. Forms vitamin K for clotting
d. Stores extra iron in ferritin
e. Stores platelets not circulating
ANS: A, B, E
Functions of the spleen include breaking down hemoglobin released from RBCs, destroying old or defective RBCs, and storing the platelets that are not in circulation. Forming vitamin K for clotting and storing extra iron in ferritin are functions of the liver.
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