Human Heart

CIRCULATION OF THE BLOOD THROUGHOUT

THE BODY

MAIN PATHWAYS OF BLOOD

Arteries

VeinsCapillaries

MAIN PATHWAYS OF BLOODArteries

- carry oxygenated blood away from the heart, except pulmonary arteries*.

* Pulmonary arteries carry deoxygenated blood away from the heart going to the lungs.

- branched into arterioles connecting small arteries to capillaries.

MAIN PATHWAYS OF BLOOD

Capillaries

- connects arterioles and venules.

- about 0.5 to 1 mm long.

- could be found in the metabolic organs.

MAIN PATHWAYS OF BLOODVeins

- carry deoxygenated blood towards the heart, except pulmonary

veins*.

*Pulmonary veins carry oxygenated blood towards the heart.

- branched into venules, connecting small veins to capillaries.