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2. Cardiac cycle - Wikipedia

   en.wikipedia.org/wiki/Cardiac_cycle

   The section shows: 1) the opened ventricles contracting once per heartbeat—that is, once per each cardiac cycle; 2) the (partly obscured) mitral valve of the left heart; 3) the tricuspid and pulmonary valves of the right heart—note these paired valves open and close oppositely. + (The aortic valve of the left heart is located below the ...

3. Coronary circulation - Wikipedia

   en.wikipedia.org/wiki/Coronary_circulation

   Coronary circulation is the circulation of blood in the arteries and veins that supply the heart muscle (myocardium). Coronary arteries supply oxygenated blood to the heart muscle. Cardiac veins then drain away the blood after it has been deoxygenated.

4. Cardiac physiology - Wikipedia

   en.wikipedia.org/wiki/Cardiac_physiology

   The heart functions as a pump and acts as a double pump in the cardiovascular system to provide a continuous circulation of blood throughout the body. This circulation includes the systemic circulation and the pulmonary circulation. Both circuits transport blood but they can also be seen in terms of the gases they carry.

5. Walking is great for your health — but is longer better? - AOL

   www.aol.com/lifestyle/walking-great-health...

   Incorporating more steps into your day can better your heart and lung ... “Long walks improve circulation, strengthen the heart and enhance lung capacity by sustaining aerobic activity for an ...

6. Circulatory system - Wikipedia

   en.wikipedia.org/wiki/Circulatory_system

   In vertebrates, the circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the body. [1] [2] It includes the cardiovascular system, or vascular system, that consists of the heart and blood vessels (from Greek kardia meaning heart, and Latin vascula meaning vessels).

7. Take heart: Follow 8 essential steps for cardiovascular ...

   www.aol.com/news/heart-8-essential-steps...

   The American Heart Association recently updated its components for improving and maintaining cardiovascular wellness. See what's new. Take heart: Follow 8 essential steps for cardiovascular health ...

8. Cardiovascular physiology - Wikipedia

   en.wikipedia.org/wiki/Cardiovascular_physiology

   coronary circulation: 5%: high: under-perfused: Minimal ability to use anaerobic respiration. Blood flow through the left coronary artery is at a maximum during diastole (in contrast to the rest of systemic circulation, which has a maximum blood flow during systole.) splanchnic circulation: 15%: low: Flow increases during digestion. hepatic ...

9. 5 things that put your heart health at risk - AOL

   www.aol.com/lifestyle/5-things-put-heart-health...

   Heart disease is the leading cause of death for men and women in the U.S., which should make heart health a focus for the majority of the population. But despite how serious — and deadly ...