Free Vision Screenings for Infants and Toddlers. The early years of life from birth until age five are crucial for a childâs visual development and eye health. The American Optometric Association recognizes how important it is to get your baby's vision off to a good start.
atrium(Noun) 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.
There are two types chambers of the heart, called the ventricles and the atria (singular is atrium). Each side of the heart has one ventricle and one atrium, and most people make a common mistake of assuming that the ventricles sit atop the atria. In fact the reverse is true. Each ventricle is located below an atrium.