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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 ...
Mathematically simple heart shape. Some have come up with advanced and complex algebraic or trigonometric equations to approximate the heart/love symbol. This image instead uses two simple perpendicular straight lines and two partial circular arcs. Mathematically, x and y are related by the following four equations (one applying in each quadrant):
To this day, the heart-shaped symbol hasn't skipped a beat. SEE MORE: Zoo will name a cockroach after your ex for Valentine's Day. Show comments. Advertisement. Advertisement.
The primary purpose of a pacemaker is to maintain an even heart rate, either because the heart's natural cardiac pacemaker provides an inadequate or irregular heartbeat, or because there is a block in the heart's electrical conduction system. Modern pacemakers are externally programmable and allow a cardiologist to select the optimal pacing ...
American consumers are feeling less confident in December, a business research group says. The Conference Board said Monday that its consumer confidence index fell back in December to 104.7 from ...
Here are the most popular Black Friday deals our AOL readers have been shopping today, including AirPods, smart plugs, Kate Spade bags, and Old Navy coats.