Vöðvaveggur

Vöðvaveggur, known in English as the intermyocardial or septal wall, is a muscular partition that separates the left and right chambers of the heart. It primarily consists of cardiac muscle tissue, enabling it to contract and assist in the overall function of the heart.

The term "vöðvaveggur" specifically refers to the interventricular septum, which is divided into two parts: the muscular portion and the membranous portion. The muscular part is thicker and forms the majority of the septum, while the membranous part is thinner and located near the heart’satrioventricular and semilunar valves.

Functionally, the vöðvaveggur plays a crucial role in maintaining the separation of oxygenated and deoxygenated blood within the heart. During systole, the contraction of the interventricular septum contributes to the uniform contraction of the ventricles, which is essential for effective blood ejection into the pulmonary artery and the aorta.

Anatomically, the septum is supplied by branches of the coronary arteries, most notably the anterior interventricular artery, which provides blood to the anterior portion of the septum. Its structure and integrity are vital for normal cardiac function; defects in the septum, such as ventricular septal defects, can lead to abnormal blood flow and various cardiac complications.

Overall, the vöðvaveggur is an integral component of cardiac anatomy that facilitates efficient myocardial function, ensuring proper separation and coordination of the heart’s chambers.