Right Atrium(RA) （右心室）
RA receives deoxygenated blood from Vena cava.
Right Ventricle(RV) （右心房）
RV pumps blood into the pulmonary circulation to the lungs.
Left Ventricle(LV) （左心室）
LV pumps blood into the systemic circulation through the aorta.
LV has thick wall because it needs to pump blood to whole body.
Left Atrium(LA) （左心房）
LA receives the oxygenated blood from the pulmonary vein.
The aorta is the main artery.
It is originated from the LV.
Aortic arch （大動脈弓）
The aortic arch is the section of the aorta between the ascending and decending aorta.
Pulmonary Vein(PV) （肺静脈）
PV transfer oxygenated blood from the lungs to the heart.
(inferior) Vena cava （大静脈）
The vena cava is a large vein.
It carries the deoxygenated blood from the body into the RA.
Pulmonary Arteries(PA) （肺動脈）
The pulmonary artery is an artery in the pulmonary circulation.
It carries deoxygenated blood from the right side of the heart to the lungs.
Mitral valve （僧帽弁）
The mitral valve is a valve with two flaps in the heart.
It exists between the LA and LV.
Tricuspid valve （三尖弁）
The tricuspid valve is a valve with three flaps in the heart.
It exists between RA and RV.
Aortic valve （大動脈弁）
The aortic valve is a valve between LV and the aorta.
Pulmonary valve （肺動脈弁）
The pulmonary valve is a valve between RV and the pulmonary arteries.