If you are referring to the valve that separates the left atrium from the left ventricle, it is called the mitral valve.
Capillaries
ventricles from the pulmonary trunk and aorta
There are not valves in the pulmonary artery or the aorta. However there are valves between these and the heart. Between the right ventricle and the pulmonary artery there is a valve referred to as the pulmonary semilunar valve. Between the left ventricle and the aorta there is a valve called the aortic semilunar valve.
The pulmonary valve is the tricuspid valve between the right ventricle and the pulmonary artery. It prevents blood from flowing down the artery back into the right ventricle.
The pulmonary artery carries blood from the right ventricle to the lungs. This is the unusual artery in that it carries deoxygenated blood.
The Pulmonary arteries carry deoxygenated blood from the lungs to the heart.
The pulmonary artery takes blood from the right ventricle into the lungs; the pulmonary vein collects blood from the lungs back to the left atrium of the heart.
when the deoxygenated blood is collected from the different parts of the body it enters the right auricle and is sent to the right ventricle. From the right ventricle the blood is pumped through the pulmonary artery to the lungs for reoxygenation.
through seminular valve at the time of ventricle contaraction blood from right ventricle is pumped to lungs.
Pulmonary arteries carry deoxygenated blood from the right ventricle.
Deoxygenated blood: Right ventricle --> Pulmonary artery --> LungOxygenated blood: Left ventricle --> Aorta --> Body
B) right ventricle, pulmonary artery, and left atrium
The blood vessels that take oxygenated blood from the right ventricle to the lungs are the pulmonary artery. It is part of the pulmonary circulation.