Ascending aorta
Four main blood vessels enter/exit the heart: two veins and two arteries. Oxygenated blood enters the left ventricle through the pulmonary vein. This same blood is then pumped out of the left atrium via the aorta. Meanwhile, de-oxygenated blood enters the heart in the vena cava; before leaving through the pulmonary artery.
right ventricle
Aorta
The blood leaving the left ventricle is oxygen-rich and the blood coming out of the right ventricle is oxygen-poor. It then goes through the pulmonary arteries and into the capillaries of the lung where the carbon dioxide is exchanged for oxygen.
deoxygenated
the four major parts of the heart are the right atrium, left atrium, right ventricle & left ventricle ..
deoxygenated
The LEFT ventricle and pulmonary artery are not connected by a valve. The RIGHT ventricle is connected by the pulmonic valve. The mitral valve separates the left atrium from the left ventricle and the tricuspid valve seperates the right atrium from the right ventricle.
Because God made it that way
right ventricle then on to the pulmonary circulation, to the left atrium, left ventricle then to the body systems back to the right atrium.
The Pulmonary Artery which takes the deoxygenated blood to the lungs.
The left Ventricle pumps blood out to your body