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As the heart pumps, the arteries carry oxygen-rich blood (shown in red) away from the heart and toward the body's tissues and vital organs. These include the...
The heart could not move blood like a fluid pump without its four valves. These valves open to allow blood to flow through and then close to prevent blood from flowing backwards. The animation in this module shows you the heartbeat cycle in motion.
Structure. Blood flow in the pulmonary and systemic circulations showing capillary networks in the torso sections. The circulatory system includes the heart, blood vessels, and blood. [2] . The cardiovascular system in all vertebrates, consists of the heart and blood vessels.
Pulmonary circulation moves blood between the heart and the lungs. It transports deoxygenated blood to the lungs to absorb oxygen and release carbon dioxide. The oxygenated blood then flows back to the heart. Systemic circulation moves blood between the heart and the rest of the body.
There are 2 primary circulatory loops in the human body: the pulmonary circulation loop and the systemic circulation loop. Pulmonary circulation transports deoxygenated blood from the right side of the heart to the lungs, where the blood picks up oxygen and returns to the left side of the heart.
Figure 20.5.14 – Major Systemic Veins of the Body: The major systemic veins of the body are shown here in an anterior view. The right atrium receives all of the systemic venous return. Most of the blood flows into either the superior vena cava or inferior vena cava.
