Multiple Choice
What makes up the formed elements of blood?
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17. The Blood
Introduction To Blood
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What component of blood typically makes up about 45% of blood volume?
A
Plasma
B
Red blood cells
C
White blood cells
D
Platelets
Verified step by step guidance1
Understand the composition of blood: Blood is composed of plasma, red blood cells, white blood cells, and platelets.
Recognize the percentage of each component: Plasma makes up about 55% of blood volume, while the cellular components (red blood cells, white blood cells, and platelets) make up the remaining 45%.
Identify the major cellular component: Among the cellular components, red blood cells are the most abundant, typically comprising about 45% of the total blood volume.
Differentiate between the components: White blood cells and platelets together make up less than 1% of blood volume, with red blood cells being the predominant cellular component.
Conclude that red blood cells are the component that typically makes up about 45% of blood volume, as they are the most abundant cells in the blood.
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