from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A plural of atrium.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Plural form of atrium.
from The Century Dictionary and Cyclopedia
- n. Plural of atrium.
Sorry, no etymologies found.
Now what is happening here -- take a look at this animation, the top chambers of the heart, called the atria, just simply aren't beating effectively.
What happens here, Betty, is the top two chambers called the atria just stopped beating normally.
It is a condition in which the upper chambers of the heart, called the atria, beat in a rapid and uncoordinated fashion, which can cause blood to pool within the heart.
Atrial fibrillation occurs when the heart's upper chambers (called atria) quiver, instead of beating properly, and this disruption may allow blood to pool or clot, raising the risk of stroke.
In AF the upper chambers of the heart, called the atria, beat in a rapid and uncoordinated fashion, which can cause blood to pool within the heart.
When it occurs, the two small upper chambers of the heart, called the atria, quiver instead of beating normally.
The upper two chambers of the heart are called atria and the lower two chambers are called ventricles.
L.H. ANSWER: The atria are the two upper heart chambers.
The condition occurs when the heart's top chambers, called the atria, get out of sync with the bottom chambers 'pumping action.
We got to the Common and there, when I least expected it, I "atria" being infused into my personal definition of patriotism.
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