Veins return blood to the heart.
Four veins enter the heart.
The superior vena cava (SVC) returns blood from the head, neck and arms and enters the right atrium of the heart.
The inferior vena cava (IVC) returns blood from the rest of the body and also enters the right atrium of the heart.
The left and right pulmonary veins return blood from the lungs and enter the left atrium.
blood first enters the heart through the right atrium.
Oxygenated blood enters the heart in the pulmonary vein. It passes through the left ventricle, before exiting in the aorta.
Inferior vena cava
blood returning to the heart from the upper portion of the body enters the right atrium through the superior vena cava.
Oxygen-poor blood enters the heart through the right atrium
When blood leaves the lungs through the pulmonary veins, it returns to the heart and enters the left ventricle.
Blood that comes in to the right atrium comes from the pulmonary vein.
Aorta
artery- vein- capillary
Through the vena cava. Blood enters the heart at the right atrium when from the systemic circulation. It Gets here through the superior and inferior vena cava and the coronary sinus. From the pulmonary circulation it enters the left atrium from the pulmonary vein.
Blood passes through the bicuspid valve and enters the left ventricle.
Blood comes into your heart through the veins all throughout the body, it enters the heart through the superior and inferior vena cava, leaves the heart though the pulmonary artery, enters the lungs,...