do you take blood from a vein or artery
Arteries. The arteries (red) carry oxygen and nutrients away from your heart, to your body's tissues. The veins (blue) take oxygen-poor blood back to the heart. 1  Arteries begin with the aorta, the large artery leaving the heart.2  They carry oxygen-rich blood away from the heart to all of the body's tissues.3  They branch several times, becoming smaller and smaller as they carry blood further from the heart.he arteries (red) carry oxygen and nutrients away from your heart, to your body's tissues. The veins (blue) take oxygen-poor blood back to the heart. 1  Arteries begin with the aorta, the large artery leaving the heart.