What is moderator band in heart? 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 sheep and some
What is moderator band in heart?
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 sheep and some other animals. It extends from the base of the anterior papillary muscle to the ventricular septum.
What is the moderator band made up of?
The moderator band is covered externally by the endocardium that is mainly consisting of the endothelial layer of simple squamous epithelium, subendothelial layer of loose connective tissue and the subendocardial layer that connects the endocardium with myocardium.
What heart chamber contains the moderator band?
The moderator band is located in the right ventricular apex that connects the interventricular septum to the anterior papillary muscle.
Does the left ventricle have a moderator band?
Also called false tendons, false chordate and left ventricular moderator bands among other names, left ventricular bands are fibromuscular structures in the left ventricle crossing the cavity or simply joining nearby trabeculations or papillary muscles left ventricle.
What would happen if the moderator band was severed?
The moderator band is a muscular band of heart tissue found in the right ventricle of the heart. If the moderator band was damaged, the AV valves would prolapse into the atria.
Where is the moderator band on the heart?
The moderator band (MB, also known as the septomarginal trabecula) found in all human hearts is derived from the muscle band of the interventricular septum, begins below the septal end of the supraventricular crest, and runs toward the anterolateral wall of the ventricle [1].
What 3 vessels fill the right atrium?
The blood vessels include the superior and inferior vena cava. These bring blood from the body to the right atrium. Next is the pulmonary artery that carries blood from the right ventricle to the lungs.
Is the moderator band a muscle?
In the human heart, the moderator band, or trabecula septomarginalis, is a muscle column that courses inferiorly from the right portion of the interventricular septum to the base of the anterior papillary muscle of the right ventricle This muscular structure is crossed by one or more arteries, which come from the …
Do humans have a moderator band?
What is the most muscular chamber of the heart?
left ventricle
The left ventricle, the most muscular chamber of the heart, then contracts with enough pressure to send the blood through the aortic valve and into the aorta. After the blood passes through the aortic valve it closes to prevent backflow of blood into the left ventricle.