Bring Anatomy to life
The smooth part of right atrium, also referred to as the venous component of the right atrium, has a smooth wall and is positioned behind crista terminalis. It receives the superior vena cava, inferior vena cava, and the coronary sinus at its junction with the atrial septum.
Crista terminalis is a vertically oriented smooth internal muscular ridge that starts next to the opening of the superior vena cava and ends next to the opening of the inferior vena cava.
The right auricle of heart, also referred to as the right atrial appendage, it is a triangular-shaped structure that displays raised muscular bands known as pectinate muscles.
The right atrium is one of the four chambers of the heart, is thin-walled, positioned on the right and collects venous blood. It is composed of three components, the appendage, the venous component, and the vestibule.
The root of the pulmonary trunk refers to the base or proximal portion of the pulmonary artery. It is the section of the pulmonary artery that arises from the right ventricle and gives rise to the pulmonary valve. It is supported by the right ventricular outflow tract.