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“atrium”
atrium
A chamber at the entrance of a body opening.
This entry is located in the following unit:
Ant and Related Entomology Terms
(page 4)
Either of the two upper chambers of the heart: Both atriums in the heart are vital to a person's life. The right atrium takes in deoxygenated blood, while the pulmonary vein pumps oxygenated blood into the left atrium.
This entry is located in the following unit:
Anatomy and Related Anatomical Terms
(page 3)