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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. The left and right sides of the heart have different functions: the right side receives de-oxygenated blood through the superior and inferior venae cavae and pumps blood to the lungs through the pulmonary artery, and the left ...
The heart is a muscular organ found in humans and other animals. This organ pumps blood through the blood vessels. [1] Heart and blood vessels together make the circulatory system. [2] The pumped blood carries oxygen and nutrients to the tissue, while carrying metabolic waste such as carbon dioxide to the lungs. [3]
Silver coins from the ancient Libya of the 6th to 5th centuries BC bear images strongly reminiscent of the heart symbol, sometimes accompanied by images of the silphium plant. [ 36 ] [ 37 ] The related Ferula species asafoetida – which was actually used as an inferior substitute for silphium – is regarded as an aphrodisiac in Tibet and ...
Enjoy a classic game of Hearts and watch out for the Queen of Spades!
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.