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Which of the following statements about hematocrit levels is true?
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17. The Blood
Introduction To Blood
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Which of the following is not a component of blood plasma?
A
Proteins
B
Water
C
Red blood cells
D
Electrolytes
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Begin by understanding the composition of blood plasma. Blood plasma is the liquid component of blood that holds blood cells in suspension. It is primarily composed of water, proteins, electrolytes, nutrients, hormones, and waste products.
Identify the components listed in the problem: Proteins, Water, Red blood cells, and Electrolytes.
Recall that blood plasma does not contain blood cells. Blood cells, including red blood cells, white blood cells, and platelets, are suspended in the plasma but are not part of the plasma itself.
Recognize that proteins, water, and electrolytes are indeed components of blood plasma. Proteins include albumin, globulins, and fibrinogen, while electrolytes include sodium, potassium, calcium, and bicarbonate.
Conclude that red blood cells are not a component of blood plasma, as they are cellular elements suspended within the plasma.
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