Whole blood for testing in a clinical laboratory is usually collected from
A) the heart.
B) a superficial artery.
C) a superficial vein.
D) a capillary.
E) an arteriole.
Question 2
Fatty acids that are necessary for proper health but cannot be synthesized by the body are called ________ fatty acids.
A) oxidative
B) metabolic
C) essential
D) vital
E) non-metabolic