For a person whose hematocrit is 45%, in which choice below are the components of blood correctly ranked in order of decreasing percent volume?
A) WBCs, plasma, RBCs
B) RBCs, WBCs, plasma
C) Plasma, RBCs, WBCs
D) Plasma, WBCs, RBCs
E) WBCs, RBCs, plasma

Question

Quizplus · Accepted Answer

Plasma typically constitutes about 55% of total blood volume, RBCs (red blood cells) make up about 45% in this case, and WBCs (white blood cells) make up less than 1%, making choice C the correct ranking from highest to lowest percent volume.

For a Person Whose Hematocrit Is 45%, in Which Choice