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].Hereof, what does the moderator band do?
It is well-marked in sheep and some other animals, and frequently extends from the base of the anterior papillary muscle to the ventricular septum. The moderator band is important because it carries part of the right bundle branch of the AV bundle of the conduction system of the heart to the anterior papillary muscle.
Furthermore, what does the Septomarginal Trabecula contain? The septomarginal trabecula forms the anteroinferior border between the superior, smooth outflow tract of the ventricle and the trabeculated inflow tract. At its septal attachment, it may be continuous with the supraventricular crest. Links: supraventricular crest (heart, anatomy)
Additionally, what is a moderator band in left ventricle?
Location: 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 does Trabeculae Carneae do?
The trabeculae carneae also serve a function similar to that of papillary muscles in that their contraction pulls on the chordae tendineae, preventing inversion of the mitral (bicuspid) and tricuspid valves towards the atrial chambers, which would lead to subsequent leakage of the blood into the atria.
Why is left ventricle thicker?
The ventricles of the heart have thicker muscular walls than the atria. The left ventricle also has a thicker muscular wall than the right ventricle, as seen in the adjacent image. This is due to the higher forces needed to pump blood through the systemic circuit (around the body) compared to the pulmonary circuit.Where is the bundle of His located?
The bundle of His is an important part of the electrical conduction system of the heart, as it transmits impulses from the atrioventricular node, located at the anterior-inferior end of the interatrial septum, to the ventricles of the heart.What is the center of the heart called?
This wall is called the septum. Chambers of the heart.Where is the coronary sinus located?
The coronary sinus is a collection of smaller veins that merge together to form the sinus (or large vessel), which is located along the heart's posterior (rear) surface between the left ventricle and left atrium.What is the most muscular chamber of the heart?
left ventricle
What are Pectinate muscles?
The pectinate muscles (musculi pectinati) are parallel ridges in the walls of the atria of the heart. They are so-called because of their resemblance to the teeth of a comb as in pecten. Behind the crest (crista terminalis) of the right atrium the internal surface is smooth.What is the function of papillary muscles?
The papillary muscles are muscles located in the ventricles of the heart. They attach to the cusps of the atrioventricular valves (also known as the mitral and tricuspid valves) via the chordae tendineae and contract to prevent inversion or prolapse of these valves on systole (or ventricular contraction).What is the conduction system of the heart?
The cardiac conduction system is a group of specialized cardiac muscle cells in the walls of the heart that send signals to the heart muscle causing it to contract. The SA node (anatomical pacemaker) starts the sequence by causing the atrial muscles to contract.What is the function of Chordae Tendineae?
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.What is the function of the left atrium?
The left atrium is one of the four chambers of the heart, located on the left posterior side. Its primary roles are to act as a holding chamber for blood returning from the lungs and to act as a pump to transport blood to other areas of the heart.Which event occurs during ventricular systole?
Systole causes the ejection of blood into the aorta and pulmonary trunk. Lasting usually 0.3 to 0.4 second, ventricular systole is introduced by a very brief period of contraction, followed by the ejection phase, during which 80 to 100 cc of blood leave each ventricle.Where is the interventricular septum located?
Location: Medial wall of the left ventricle. This is the wall that borders septum between the left and right ventricle.Which artery supplies the infundibulum of the right ventricle?
The infundibulum is the entrance from the right ventricle into the pulmonary artery and pulmonary trunk. The wall of the infundibulum is smooth. The Conus artery supplies the Infundibulum of the right ventricle.Where in the body is a tricuspid valve most likely found?
Your tricuspid valve is located between the right atrium and right ventricle of your heart. It regulates the flow of blood from your body into the right ventricle. Deoxygenated blood comes from your body and fills the right atrium.What is Crista terminalis?
The crista terminalis is generally a smooth-surfaced, thick portion of heart muscle in a crescent shape at the opening into the right atrial appendage. On the external aspect of the right atrium, corresponding to the crista terminalis is a groove, the terminal sulcus or commonly known as sulcus terminalis.What is coronary sulcus?
n. A groove on the outer surface of the heart marking the division between the atria and the ventricles. atrioventricular groove.What are the names of the vessels that supply the heart with oxygen?
The aorta (the main blood supplier to the body) branches off into two main coronary blood vessels (also called arteries). These coronary arteries branch off into smaller arteries, which supply oxygen-rich blood to the entire heart muscle. The right coronary artery supplies blood mainly to the right side of the heart. 
