Arteries are distinguished from veins based on all of the following features except the
A) direction of blood flow relative to the heart.
B) structure of their walls.
C) amount of oxygen present in the blood.
D) blood pressure pushing against the walls of the vessels.

Question

Quizplus · Accepted Answer

The amount of oxygen present in the blood is not a distinguishing feature between arteries and veins. Arteries typically carry oxygenated blood away from the heart, while veins carry deoxygenated blood back to the heart. The main distinguishing features between arteries and veins are their direction of blood flow, structure of their walls, and blood pressure pushing against the walls of the vessels.

Arteries Are Distinguished from Veins Based on All of the Following