Meanings (ES + gloss)
atrio
A square hall lit by daylight from above, into which rooms open at one or more levels.
aurícula
An upper chamber of the heart that receives blood from the veins and forces it into a ventricle. In higher vertebrates, the right atrium receives blood from the superior vena cava and inferior vena cava, and the left atrium receives blood from the left and right pulmonary veins.