Dense structure of connective tissue within the heart
In cardiology, the cardiac skeleton, also known as the fibrous skeleton of the heart, is a high-density homogeneous structure of connective tissue that forms and anchors the valves of the heart, and influences the forces exerted by and through them. 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. This provides crucial support and structure to the heart while also serving to electrically isolate the atria from the ventricles.[1]
The unique matrix of connective tissue within the cardiac skeleton isolates electrical influence within these defined chambers. In normal anatomy, there is only one conduit for electrical conduction from the upper chambers to the lower chambers, known as the atrioventricular node. The physiologic cardiac skeleton forms a firewall governing autonomic/electrical influence until bordering the bundle of His which further governs autonomic flow to the bundle branches of the ventricles. Understood as such, the cardiac skeleton efficiently centers and robustly funnels electrical energy from the atria to the ventricles.
In cardiology, the cardiacskeleton, also known as the fibrous skeleton of the heart, is a high-density homogeneous structure of connective tissue that...
longitudinal sulcus and the posterior interventricular sulcus. The fibrous cardiacskeleton gives structure to the heart. It forms the atrioventricular septum...
of cardiac muscle (heart muscle) in all animals is initiated by electrical impulses known as action potentials that in the heart are known as cardiac action...
of coronary arteries Anomalous aortic origin of a coronary artery Cardiacskeleton Coronary sinus Coronary steal Cardiology Left coronary artery Right...
Cardiac muscle (also called heart muscle or myocardium) is one of three types of vertebrate muscle tissues, with the other two being skeletal muscle and...
The cardiac conduction system (CCS, also called the electrical conduction system of the heart) transmits the signals generated by the sinoatrial node...
are part of the dense connective tissue of the heart known as the cardiacskeleton and are responsible for the regulation of blood flow through the heart...
V more common. The term cardiacskeleton is sometimes considered synonymous with endomysium in the heart, but cardiacskeleton also refers to the combination...
fibers are distinctly shielded from each other by collagen or the cardiacskeleton. The Purkinje fibers are further specialized to rapidly conduct impulses...
trabeculae carneae are among the first of the cardiac structures to develop in the embryonic cardiac tube. Further, throughout development some trabeculae...
impermeable collagen layers of connective tissue known as the cardiacskeleton. The cardiacskeleton is made of dense connective tissue which gives structure...
The smallest cardiac veins (also known as the Thebesian veins (named for Adam Christian Thebesius)) are small, valveless veins in the walls of all four...
Cardiac physiology or heart function is the study of healthy, unimpaired function of the heart: involving blood flow; myocardium structure; the electrical...
inner surface.: 56 A prominent crista terminalis may be mistaken for a cardiac mass during heart imaging; a prominent crista terminalis appears as a hyperechoic...
vessel. Heart valves are situated around the fibrous rings of the cardiacskeleton. The valves incorporate flaps called leaflets or cusps, similar to...
The moderator band (also known as septomarginal trabecula) is a band of cardiac muscle found in the right ventricle of the heart. It is well-marked in...
There are two types of striated muscle: Cardiac muscle (heart muscle) Skeletal muscle (muscle attached to the skeleton) Striated muscle tissue contains T-tubules...
infection such as HIV or can occur after cardiac surgery. Large and rapidly accumulating effusions may cause cardiac tamponade, a life-threatening complication...
displaying wikidata descriptions as a fallback Cardiac cycle – Performance of the human heart Vital heat Cardiac muscle – Muscular tissue of heart in vertebrates...
cardiomyocytes (heart muscle cells), is involved in this modulatory role. Thus, the cardiac endothelium (both the endocardial endothelium and the endothelium of the...
sinuatrial node, SA node or sinus node) is an oval shaped region of special cardiac muscle in the upper back wall of the right atrium made up of cells known...
The mitral annulus is saddle shaped and changes in shape throughout the cardiac cycle. The annulus contracts and reduces its surface area during systole...
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