Which can be used to characterize blood flow in the human body?
A: There is a unidirectional blood flow.
B: Arteries always carry oxygenated blood.
C: Veins always carry deoxygenated blood.
D: Arteries carry blood away from the heart.
E: Veins carry blood toward the heart.
A)a,c,d,e
B)a,b,c,d,e
C)a,d,e
D)b,c,d,e
E)d,e

Question

Quizplus · Accepted Answer

A unidirectional blood flow is a fundamental characteristic of the circulatory system, ensuring that blood circulates through the body in a specific direction. Arteries carry blood away from the heart, and veins carry blood toward the heart. However, the statements that arteries always carry oxygenated blood and veins always carry deoxygenated blood are not universally true. For example, the pulmonary arteries carry deoxygenated blood from the heart to the lungs, and the pulmonary veins carry oxygenated blood from the lungs back to the heart.

Which Can Be Used to Characterize Blood Flow in the Human