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What is the main organ of the cardiovascular system?
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How does the heart work in the circulatory system?
The heart is a muscular organ in most animals. This organ pumps blood through the blood vessels of the circulatory system. The pumped blood carries oxygen and nutrients to the body, while carrying metabolic waste such as carbon dioxide to the lungs.
- Heart (Disambiguation)
A heart is a muscular organ that pumps blood in various...
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Accelerans nerve forms a part of the sympathetic branch of...
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- Pericardium
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Nitrogen wastes. The nitrogen compounds through which excess...
- Heart (Disambiguation)
The heart is a muscular organ situated in the mediastinum. It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system.
Mar 17, 2024 · Heart, organ that serves as a pump to circulate the blood. It may be as simple as a straight tube, as in spiders and annelid worms, or as complex as the four-chambered double pump that is the center of the circulatory system in humans, other mammals, and birds.
- The Editors of Encyclopaedia Britannica
The heart is an organ found in every vertebrate. It is a very strong muscle. It is on the left side of the body in humans and is about the size of a fist. It pumps blood throughout the body. It has regular contractions, or when the heart squeezes the blood out into other parts of the body.
Cardiac physiology or heart function is the study of healthy, unimpaired function of the heart: involving blood flow; myocardium structure; the electrical conduction system of the heart; the cardiac cycle and cardiac output and how these interact and depend on one another.
Jan 26, 2024 · What is the heart? The heart is a fist-sized organ that pumps blood throughout your body. It’s your circulatory system’s main organ. Muscle and tissue make up this powerhouse organ. Your heart contains four muscular sections that briefly hold blood before moving it. Electrical impulses make your heart beat, moving blood through these chambers.
Sep 30, 2020 · Cardiac arrest. Summary. The human heart is a finely-tuned instrument that serves the whole body. It is a muscular organ around the size of a closed fist, and it sits in the chest, slightly to...