Blood Vessels

The video tutorial explains the different types of blood vessels: arteries, capillaries, and veins. Arteries carry oxygen-rich blood from the heart under high pressure, with thick walls to support this function. Capillaries, with their thin walls, facilitate the exchange of oxygen and carbon dioxide. Veins return blood to the heart, equipped with valves to prevent backflow. Understanding these vessels helps in comprehending how blood circulates throughout the body.

What characteristics differentiate veins from arteries?

Explain the significance of understanding blood vessels in relation to blood distribution in an organism.