Which of the following are formed elements in the blood? 1. Leukocytes 2. Erythrocytes 3. Thrombocytes 4. Electrolytes
a. 1 and 2 only
b. 1, 2, and 3 only
c. 2, 3, and 4 only
d. 1, 2, and 4 only
ANS: C
The complete blood count (CBC) is routinely performed from a venous blood sample and exam-ines the formed elements in the blood. It provides a detailed description of the number of circu-lating white blood cells (WBCs), called leukocytes, red blood cells (RBCs), called erythrocytes, and platelets, called thrombocytes.
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