#atrium

• Atrio- — A scholarly combining form or prefixoid used to construct medical or technical terms relating to an atrium (heart chamber) or a structural interior courtyard. It serves as a functional base to describe physiological connections, anatomical locations, or specific spatial characteristics.
• Atriocommissuropexy — A complex and rare surgical procedure consisting of the operative fixation of a cardiac valvular commissure to the atrial wall, utilized for the structural correction of congenital malformations or severe valvular insufficiencies. This technical reconstruction method aims to restore normal blood flow dynamics and prevent parasitic intracardiac regurgitation.
• Atrioseptopexy — A corrective surgical intervention consisting of the operative fixation or anchoring of the interatrial septum to correct a congenital structural defect, anatomical displacement, or septal instability. This surgical procedure restores the structural integrity of the dividing wall between the two atria, preventing abnormal mixing of arterial and venous blood.
• Atrium — Each of the two upper chambers of the heart (left and right) that receive blood from the veins and pump it into the ventricles; in architecture, a central interior courtyard of an ancient Roman dwelling, often open in the ceiling, or a large, high, glazed central space in modern buildings.
• Atrium — An unadapted form or architectural neologism often used as a variant for 'atriu'; the central open space of an ancient Roman house (domus), surrounded by rooms, having a central basin (impluvium) for collecting rainwater. In contemporary structural design, it describes a glass-covered interior courtyard located at the center of hotel complexes, office buildings, or large museums.
• Auricle — An anatomical pouch-like or small sac structure located on the upper part of each of the two cardiac atria (left and right auricles), serving to increase blood storage capacity. In zoology and comparative anatomy, the term also denotes the pinna of the external ear in mammals or a lateral prolongation in certain invertebrates.
• Auricle — A prominent anatomical pouch-like or ear-shaped structure attached to the cardiac atria, serving to increase their volumetric capacity; a feminine variant commonly found in older treatises for 'auricul'. In botany, it denotes a small rounded lobe located at the base of certain leaves or petals, partially clasping the stem.