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What percentage of blood plasma is composed of water?
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17. The Blood
Introduction To Blood
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What percentage of the blood is composed of plasma?
A
55%
B
45%
C
35%
D
65%
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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 of the blood.
Learn the typical percentage of plasma in blood: In a healthy adult, plasma typically makes up about 55% of the total blood volume.
Recognize the components of plasma: Plasma is primarily water, but it also contains proteins, glucose, electrolytes, hormones, carbon dioxide, and other substances.
Consider the options given: Compare the typical percentage of plasma (55%) with the options provided (55%, 45%, 35%, 65%).
Select the correct answer: Based on the typical composition of blood, identify which percentage matches the usual plasma content.
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