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The cardiac skeleton separates and partitions the atria (the smaller, upper two chambers) from the ventricles (the larger, lower two chambers). The heart's cardiac skeleton comprises four dense connective tissue rings that encircle the mitral and tricuspid atrioventricular (AV) canals and extend to the origins of the pulmonary trunk and aorta.
Tiếng Việt; 中文; Edit links ... Cardiac anatomy refers to the structure of the heart, one of the organs of the body. ... Cardiac physiology; Cardiac skeleton;
The four cardiac valves are kept in their place partly because of the fibrous skeleton of the heart, which is a collection of connective tissue. It consists of the right fibrous trigone (which along with the membranous septum forms the central fibrous body), the left right fibrous trigone, and the conus tendon. The right fibrous trigone is the ...
Regardless of the pathway, as the impulse reaches the atrioventricular septum, the connective tissue of the cardiac skeleton prevents the impulse from spreading into the myocardial cells in the ventricles except at the atrioventricular node. [1] The electrical event, the wave of depolarization, is the trigger for muscular contraction.
The coronary arteries are the arterial blood vessels of coronary circulation, which transport oxygenated blood to the heart muscle.The heart requires a continuous supply of oxygen to function and survive, much like any other tissue or organ of the body.
Cardiology (from Ancient Greek καρδίᾱ (kardiā) 'heart' and -λογία () 'study') is the study of the heart. Cardiology is a branch of medicine that deals with disorders of the heart and the cardiovascular system.
Additionally, the contractility and electrophysiological environment of the cardiomyocyte are regulated by the cardiac endothelium. [ 5 ] The endocardial endothelium may also act as a kind of blood–heart barrier (analogous to the blood–brain barrier ), thus controlling the ionic composition of the extracellular fluid in which the ...
The cardiac skeleton seems to be more or less a curiosity to anatomists. Modern day physiologists do not seem to acknowledge it even exists. If this skeleton actually exists as described the contribution of a continuous semirigid collagenous structure originating in the center of the heart has many potential contributions to cardiac physiology.