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Answer: c. Blood is composed of the formed elements and plasma. Plasma is the liquid portion of blood. The formed elements consist of the cells and cell fragments. The erythrocytes (red blood cells), platelets, and leukocytes (white blood cells) are all considered formed elements.eutrophil. d. Monocytes. e. Eosinophils. Answer: b. Basophils are the least abundant leukocyte. Leukocytes are the white blood cells. The order of frequency of the leukocytes is: neutrophil, lymphocyte, monocyte, eosinophil, basophil.
It is approximately 90% water, 7% protein, and 3% other organic and inorganic molecules and ions. The cellular components (formed elements) of the blood make up approximately 45% of the total cell volume. Approximately 99% of the cells are red blood cells (erythrocytes). The remaining cells are white blood cells (leukocytes) and platelets (thrombocytes). When mammalian whole blood is subjected to centrifugation (5000 x g, 5 min.), the cellular components collect at the bottom of the tube to form a pellet.