What Does Atrial Mean?

Atrial: Pertaining to the atria, the upper chambers of the heart, as in atrial fibrillation and atrial septal defect.

What does atrium mean in the heart?

Atrium, in vertebrates and the higher invertebrates, heart chamber that receives blood into the heart and drives it into a ventricle, or chamber, for pumping blood away from the heart. ... In humans the atria are the two upper chambers of the heart.

What does the word atrial mean in biology?

Atria. (Science: anatomy, cardiology) The thin-walled chambers of the heart that pump blood into the ventricles.