All of the blue-colored blood vessels on a blood flow diagram show passages carrying deoxygenated blood from the heart to the lungs, while all of the red-colored passages show oxygenated blood being circulated throughout... More » Science Human Anatomy Blood

Different cardiac blood flow diagrams can be found on the Healthline, Children's Heart Institute and Austin Community College websites. Each provide a different method of explanation. Healthline allows the user to scroll... More » Science Human Anatomy Blood

A foot reflexology diagram displays the reflex points on a human foot. There are more than 7,000 nerve endings on each foot. Each of these areas, known as reflex points, corresponds to a specific system, gland, organ or ... More » Health Diagnostics & Imaging
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The human circulatory system, also known as the cardiovascular system, includes the heart, blood vessels and the lungs, according to LiveScience. The circulatory system transports nutrients, oxygen, hormones and other su... More » Science Human Anatomy Blood

Blood that reaches the lungs travels throughout a network of small blood vessels, where oxygen moves into the blood and carbon dioxide moves out of the blood, according to the National Heart, Lung and Blood Institute. Th... More » Science Human Anatomy Blood

The heart is the first organ to receive freshly oxygenated blood from the lungs, explains the National Institute of Health. The heart has two sides. The right side pumps blood to the lungs to pick up oxygen and the left ... More » Science Human Anatomy Blood

Pulmonary arteries carry blood from the heart to the lungs. According to, the primary pulmonary artery branches off the right ventricle of the heart before further branching into right and left pulmonary arteri... More » Science Human Anatomy Blood