Multiple Choice
In the countercurrent exchange system, how does blood flow?
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17. The Blood
Introduction To Blood
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Plasma makes up approximately what percentage of whole blood?
A
65%
B
55%
C
35%
D
45%
Verified step by step guidance1
Understand the composition of blood: Blood is composed of plasma and formed elements (red blood cells, white blood cells, and platelets). Plasma is the liquid portion that makes up a significant part of blood volume.
Recall the typical percentage of plasma in whole blood: Plasma generally constitutes about 55% of the total blood volume in a healthy individual.
Consider the options provided: Compare the typical percentage of plasma (55%) with the options given (65%, 55%, 35%, 45%).
Identify the correct percentage: The option that matches the typical percentage of plasma in whole blood is 55%.
Conclude with the correct understanding: Plasma makes up approximately 55% of whole blood, which is the correct answer among the given choices.
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