ticker,heart,pump- the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions move the blood through the body; "he stood still, his heart thumping wildly" leaflet,cusp- a thin triangular flap of a heart valve ...
What is the brachial artery and what is its function? What is the purpose of the coronary artery and what results if there is a blockage in this vessel? If the atrioventricular valves are open, what should be happening in the heart at that time?
Engineered Heart Valves Recent scientific and technological progress has stimulated the goal of generating a “tissue-engineered” heart valve, a living valve replacement that would obviate the complications of conventional valve replacement, adapt to changing environmental conditions in the recipient, and ...
Heart valves are flap-like structures that allow blood to flow in one direction. Heart valves are vital to the proper circulation of blood in the body. The heart has two kinds of valves, atrioventricular and semilunar valves. These valves open and close during the cardiac cycle to direct the...
Its collagen fibers bundles are mainly arranged circumferentially. Elastin surrounds the collagen bundles, which allows the valves to close properly by storing energy during systole and releasing the energy back to the collagen fibers during diastole. The spongiosa is the middle layer and acts like ...
More recently, Computational Fluid Dynamics (CFD) has emerged as a promising tool, which, alongside experimentation, can yield insights of unprecedented detail into the hemodynamics of prosthetic heart valves. For CFD to realize its full potential, however, it must rely on numerical techniques that ...
Heart Valves Blood flows through the heart in one direction: from the atria to the ventricles and out the great arteries leaving the superior aspect of the heart. Four valves enforce the one-way traffic. They open and close in response to differences in blood pressure. ...
Combination therapy might be used based on the specific microorganism and its susceptibility pattern. Surgical intervention might also be necessary for severe cases to remove infected tissue or replace damaged heart valves. 2. Myocarditis and Pericarditis: ...
(Note:they don’t have fibrous ring quite similar to tricuspid and mitral valves) The cusps create small pockets with their mouths directed upwards in the direction of the lumen of great vessels. Every cusp has a fibrous nodule in the midpoint of its free edge. On every side of the nodul...
Heart diseaseas such was not recognized in non-technologicalcultures, but the beatingheartand its relationship to death have always been appreciated. Sudden death, now usually attributed to heart disease, was recognized as early as the 5th centurybceby the Greek physicianHippocratesand was noted to...