Question

which blood component makes up 41% of the blood’s volume?
plasma
red blood cells
platelets
white blood cells

Explanation:

To determine the blood component that makes up 41% of blood volume, we analyze each option:

• Plasma: Makes up about 55% of blood volume. Eliminate.
• Red blood cells (erythrocytes): Typically account for approximately 40 - 45% of blood volume (matching 41%).
• Platelets: Make up a very small fraction (less than 1%) of blood volume. Eliminate.
• White blood cells: Also make up a very small fraction (about 1%) of blood volume. Eliminate.

Answer:

B. red blood cells