Human Blood Vessel Diagram. Veins have a system of valves to prevent back flow. It is returned to the heart in the veins.
Browse 2424 blood vessels diagram stock photos and images available or start a new search to explore more stock photos and images. The largest veins are the superior and inferior vena cava which return blood to the heart from the upper body and lower body respectively. It is returned to the heart in the veins.
Arteries in red are the blood vessels that deliver blood to the body.
Blood vessels arise from the mesodermal embryonic layer. The circulatory system is the most vital systems of your body that is required for the optimal distribution of oxygenated blood to all the body organs and tissues. Spend a while piecing these diagrams together in your mind trying to link the labeled names with the functions you learned about in the video. Arteries capillaries and veins.