Here is the requested information on "atria":
Parts of Speech:
Noun
Definitions:
- The two upper chambers of the heart, which receive blood from the veins and pump it into the ventricles. (source: KoalaChat)
Pronunciations:
- US: /ˈeɪtriə/
- UK: /ˈeɪtrɪə/
Origin and Usage:
The word "atria" comes from the Latin word "atrium", meaning "central hall of a Roman house". It was first used in English in the early 17th century to refer to the upper chambers of the heart. The singular form of "atria" is "atrium".
Synonyms:
Related Words:
Example Sentences:
- The atria are the two upper chambers of the heart.
- The blood enters the atria before being pumped into the ventricles.