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George R. R. Martin's A Song of Ice and Fire saga features a large cast of characters. The series follows three interwoven plotlines: a dynastic war for control of Westeros by several families; the rising threat of the undead White Walkers beyond the northern border of Westeros; and the ambition of Daenerys Targaryen, the exiled heir of the previous ruling dynasty.
He served House Stark in Robert's Rebellion and the Greyjoy Rebellion. Roose is often described as an unassuming-looking man, ageless, clean-shaven with pallid skin, with an apathetic demeanor. His most prominent feature are his strangely pale and cold eyes, so light as to almost blend with the sclera. He is described as mild-mannered, but also ...
Coronary artery disease (CAD) or ischemic heart disease are the terms used to describe narrowing of the coronary arteries. [8] As the disease progresses, plaque buildup can partially block blood flow to the heart muscle. Without enough blood supply , the heart is unable to work properly, especially under increased stress.
Cardiac catheterization (heart cath) is the insertion of a catheter into a chamber or vessel of the heart.This is done both for diagnostic and interventional purposes. A common example of cardiac catheterization is coronary catheterization that involves catheterization of the coronary arteries for coronary artery disease and myocardial infarctions ("heart attacks").
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.
The blood in the atria is pumped into the heart ventricles through the atrioventricular mitral and tricuspid heart valves. There are two atria in the human heart – the left atrium receives blood from the pulmonary circulation, and the right atrium receives blood from the venae cavae of the systemic circulation.
The heart is the driver of the circulatory system, pumping blood through rhythmic contraction and relaxation. The rate of blood flow out of the heart (often expressed in L/min) is known as the cardiac output (CO). Blood being pumped out of the heart first enters the aorta, the largest artery of the body.
The problems may involve the interior walls of the heart, the heart valves, or the large blood vessels that lead to and from the heart. [100] Congenital heart defects are partly preventable through rubella vaccination, the adding of iodine to salt, and the adding of folic acid to certain food products. [101] Some defects do not need treatment ...