Question

exam lesson name: the human body
exam number: 700946rr
exam guidelines
exam instructions
question 12 of 20 :
select the best answer for the question.

1. the component that makes up the majority of blood is

a. plasma.
b. white blood cells.
c. red blood cells.
d. platelets.
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Explanation:

To determine the main component of blood, we recall the composition of blood. Blood is made up of plasma (liquid part) and formed elements (red blood cells, white blood cells, platelets). Plasma makes up about 55% of blood volume, while red blood cells are around 45%, and white blood cells and platelets are a very small fraction. So the majority component is plasma.

Answer:

A. plasma.