the heart's lower chambers
The atria and the ventricles
yes, the hearts atria is bigger because its leads out the body from the lungs.
of, or pertaining to, the ventricle or ventricles of the heart or brain.
The human heart has four chambers.The upper two chambers are called Atria and the lower two are called Ventricles
abdomen, blood vessels, breathing, ventricles (left and right), atrium (left and right) and pulmonary valve, lungs
The upper chambers are called atria, singular atrium. The bottom chambers are called ventricles, singular ventricle.
Septum is another word for an anatomic wall separating two chambers. For instance, the interventricular septum separates the right and left ventricles of the hearts.
The heart has four chambers. The two ventricles (right and left) are muscular chambers that propel the blood out of the heart (the right ventricle to the lungs, and the left ventricle to all other organs). The two atria (right and left) hold the blood returning to the heart, and at just the right moment empty into the right and left ventricles...
Ventricles.
The ventricles contract.
the ventricles
the lower heart.