What percentage of blood volume is plasma?

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Multiple Choice

What percentage of blood volume is plasma?

Explanation:
Blood consists of a liquid portion called plasma and the formed elements (red cells, white cells, and platelets). The plasma portion makes up a little more than half of the blood’s volume—about 55%. The remaining roughly 45% is the cells and platelets, the formed elements. This balance is why, when you think of blood volume, the plasma portion is the dominant liquid component, carrying water, proteins (like albumin and clotting factors), nutrients, electrolytes, and hormones that cells need to function. For a typical adult with around 5 liters of blood, plasma would be about 2.75 liters, while the formed elements would total about 2.25 liters.

Blood consists of a liquid portion called plasma and the formed elements (red cells, white cells, and platelets). The plasma portion makes up a little more than half of the blood’s volume—about 55%. The remaining roughly 45% is the cells and platelets, the formed elements. This balance is why, when you think of blood volume, the plasma portion is the dominant liquid component, carrying water, proteins (like albumin and clotting factors), nutrients, electrolytes, and hormones that cells need to function. For a typical adult with around 5 liters of blood, plasma would be about 2.75 liters, while the formed elements would total about 2.25 liters.

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