What is the fibrous Trigone?
The right fibrous trigone is the connective tissue bridge between the aortic valve and the right atrioventricular (tricuspid) valve rings. The left fibrous trigone is the connective tissue bridge between the aortic valve and the left atrioventricular (mitral) valve rings.
What is fibrous continuity?
The area of fibrous continuity is continuous with the interleaflet triangle between the left and nonfacing sinuses of the aorta, with this area forming the posterior wall of the LV outflow tract (LVOT) (Fig 6).
What does the chordae tendineae do?
The chordae tendineae are a group of tough, tendinous strands in the heart. They are commonly referred to as the “heart strings” since they resemble small pieces of string. Functionally, the chordae tendineae play a vital role in holding the atrioventricular valves in place while the heart is pumping blood.
Where is the fibrous skeleton?
The fibrous skeleton is concentrated at the base of the ventricular mass. It provides electrical insulation at the atrioventricular level and fibrous continuity for the leaflets of the mitral, aortic, and tricuspid valves.
What does the fibrous skeleton do?
The cardiac skeleton, or fibrous skeleton of the heart, is the structure of dense connective tissue that separates the atria from the ventricles. The fibrous skeleton provides critical support for the heart and separates the flow of electrical impulses through the heart.
Does fibrous skeleton of the heart?
The fibrous skeleton of the heart anchors the valves of the heart, and gives attachment to the myocardium above and below. The fibrous skeleton is made up of dense connective tissue. It is the fibrous skeleton that allows the controlled contraction of the heart, as it provides the connective tissue skeleton necessary.
What is the aortic Semilunar valve?
The valve between the left ventricle and the aorta is the aortic semilunar valve. When the ventricles contract, atrioventricular valves close to prevent blood from flowing back into the atria. When the ventricles relax, semilunar valves close to prevent blood from flowing back into the ventricles.
What supplies interventricular septum?
posterior interventricular artery
The posterior interventricular artery, a branch of right coronary artery, supplies the posterior 1/3 of the interventricular septum. The remaining anterior 2/3 is supplied by the anterior interventricular artery which is a septal branch of the left anterior descending artery, which is a branch of left coronary artery.
What do the chordae tendineae prevent?
Since the blood pressure in atria is much lower than that in the ventricles, the flaps attempt to evert to the low-pressure regions. The chordae tendineae prevent the eversion, prolapse, by becoming tense thus pulling the flaps, holding them in closed position.
What is the role of the chordae tendineae quizlet?
The role of the chordae tendineae is to anchor the AV valves against the large pressure changes that occur as the ventricles contract.