What is the anterior interventricular sulcus?
The anterior interventricular sulcus (or anterior longitudinal sulcus) is one of two grooves that separates the ventricles of the heart, the other being the posterior interventricular sulcus. The anterior interventricular sulcus is situated on the sternocostal surface of the heart, close to its left margin.
What is the function of the left anterior descending artery?
The left anterior descending artery branches off the left coronary artery and supplies blood to the front of the left side of the heart. The circumflex artery branches off the left coronary artery and encircles the heart muscle. This artery supplies blood to the outer side and back of the heart.
What is Ramus in heart?
The ramus intermedius is a variant coronary artery resulting from trifurcation of the left main coronary artery 1. It is present in ~20% (range 15-30%) 2-3 of the population.
What is the meaning of interventricular septum?
Interventricular septum: The stout wall that separates the lower chambers (the ventricles) of the heart from one another. A hole in the interventricular septum is termed a ventricular septal defect (VSD).
What is the function of the interventricular septum quizlet?
Interventricular septum is a muscular wall that separates right and left ventricles. It prevents the mixing of oxygenated and deoxygenated blood.
What does the anterior interventricular branch supply?
The anterior interventricular septal branches supply the anterior two thirds of the interventricular septum and the atrioventricular bundle. The inferior interventricular septal branches supply the distal third of the inferior interventricular septum.
What are the branches of anterior interventricular branch?
It further branches into the circumflex artery and the anterior interventricular artery (left anterior descending artery). The anterior interventricular artery further divides into septal branches and diagonal branches. The septal branches supply the anterior two-thirds of the interventricular septum and bundle of His.
What happens if the left anterior descending artery is blocked?
The widow-maker is a massive heart attack that occurs when the left anterior descending artery (LAD) is totally or almost completely blocked. The critical blockage in the artery stops, usually a blood clot, stops all the blood flow to the left side of the heart, causing the heart to stop beating normally.
What causes LAD artery blockage?
The LAD most commonly gets blocked up with plaque from cholesterol. This condition is known as atherosclerosis, often called the “hardening of the arteries.” Plaque can cause blood clots that obstruct the artery.
What does the Ramus artery supply?
The ramus intermedius artery will supply a lateral wall territory between the first diagonal and the first obtuse marginal branch territories. Rarely, the left main coronary artery will be absent and the LAD and circumflex artery will arise directly from the aorta.