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Multiple Choice
In the context of Introduction to Blood, what is the liquid portion of blood called?
A
Platelets
B
Erythrocytes
C
Plasma
D
Serum
Verified step by step guidance
1
Understand that blood is composed of two main components: the formed elements (cells and cell fragments) and the liquid portion.
Identify the formed elements: erythrocytes (red blood cells), leukocytes (white blood cells), and platelets (cell fragments involved in clotting).
Recognize that the liquid portion of blood, which carries the formed elements and various substances like nutrients, hormones, and waste products, is called plasma.
Differentiate plasma from serum: serum is plasma without the clotting factors, meaning plasma contains clotting proteins while serum does not.
Conclude that among the given options, plasma is the correct term for the liquid portion of blood.