Which heart chamber pumps unoxygenated blood out the pulmonary trunk?

1 Answer
Jul 24, 2017

The right ventricle pumps deoxygenated blood out the heart to the lungs by the pulmonary artery or pulmonary trunk.


Deoxygenated blood enters the heart through the inferior and superior vena cava into the right atrium which pumps it through the tricuspid valve into the right ventricle which in turn pumps it to the lungs for oxygenation through the pulmonary artery. This is called the pulmonary circuit.

The oxygenated blood enters the left atrium through the pulmonary vein which pumps it through the mitral valve into the left ventricle.

The left ventricle pumps this oxygenated blood to the rest of the body through the aorta which again returns to the heart by the superior and inferior vena cava.This is called the systemic circuit.

This type of circulation is called double circulation.