Chris Friesen
Chris Friesen answered question
Blood leaves the right atrium, enters the right ventricle through the tricuspid valve. The right ventricle contracts sending the blood through the pulmonic valve into the pulmonary artery (the only 'artery' that carries unoxygenated blood, btw) taking the blood through the pulmonary circulation for oxygen/CO2 exchange, then back to the heart via the pulmonary vein … Read more