NEET BIOLOGY

Detailed explanation-1: -The interatrial septum is a thin wall of tissue that separates the right and left atria of the heart. In adult life, its main function is to separate the two atrial chambers so that there is no shunting of blood between them.

Detailed explanation-2: -Complete answer: The atrioventricular septum is a type of thick muscular partition that separates the atria from the ventricle of the heart.

Detailed explanation-3: -The interatrial septum is a thin fibromuscular wall situated between the right and left atria of the heart. In adults, the interatrial septum has a centrally positioned depression known as oval fossa. This depression marks the place where foramen ovale was placed during fetal development.

Detailed explanation-4: -Heart Wall The endocardium is the thin membrane that lines the interior of the heart. The myocardium is the middle layer of the heart. It is the heart muscle and is the thickest layer of the heart. The epicardium is a thin layer on the surface of the heart in which the coronary arteries lie.

Detailed explanation-5: -This area is a “sandwich” (previously known as the muscular atrioventricular septum), consisting of the right atrial wall, fatty tissue of the inferior atrioventricular groove, the wall of the left ventricle and the artery supplying the atrioventricular node of the conduction system.