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Definitions of various terms related to the anatomy and function of the heart. It covers the roles of the right and left atria and ventricles, the function of the tricuspid, mitral, pulmonary, and aortic valves, and the structure and functions of the endocardium, myocardium, and pericardium. Additionally, it discusses the conduction system of the heart and the factors that contribute to hypertension.
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Right atrium and ventricle work to pump oxygen poor blood to the lungsThe right atria receives its supply of oxygen-poor blood from the two largest veins in the body.The right ventricle pumps oxygen-poor blood in through the pulmonary artery. TERM 2
DEFINITION 2 Left atrium and ventricle combine to pump blood to the bodyThe left atria receives blood that has been oxygenated in the lungs from the pulmonary artery.The left ventricle pumps oxygenated blood to the body through the aorta. TERM 3
DEFINITION 3 Tricuspid valve TERM 4
DEFINITION 4 Pulmonary Valve TERM 5
DEFINITION 5 Mitral valve
Aortic Valve TERM 7
DEFINITION 7 Endocardium TERM 8
DEFINITION 8 Myocardium TERM 9
DEFINITION 9 Pericardium TERM 10
DEFINITION 10 sets the heart rate and allows the upper and lower champers to communicate with each other so they can function in a coordinated fashionSA node causes the atrium to contract and pump blood into the ventricle. Then the impulse passes through to the AV node which causes the muscle to contract and to pump blood to the lungs and the body.
rise in heart rate rise in BP because of vasoconstriction high levels of carbon monoxide: reduces the amount of oxygen blood can carry triples risk of dying for heart disease major cause of stroke increase blood cholesterol levels Buerger's Disease (Throboangitis Obliterans) TERM 17
DEFINITION 17 use MAP to evaluate drug therapyDecrease it by no more than 25% within minutes to 1 hourgoal is 160/100 over the next 2 to 6 hourssodium nitroprusside is the most effective IV drug TERM 18
DEFINITION 18 no identifiable cause90% to 95% of all casescontributing factors increase SNS increase sodium retaining hormones diabetes greater than ideal body weight increase sodium intake excessive alcohol intake