ductus venosus
Oxygen rich blood from the lungs enters the heart through the left atrium in order for your heart to pump the blood to other areas of the body. The aorta pumps the oxygenated blood to the rest of the body.
There are two types of circulations, known as lesser and greater circulation. They are placed in series. say blood enters in right atrium through superior and inferior vena cave. Then it enters right ventricle. Then it passes to lungs, via pulmonary trunk. After purification from here it goes to left atrium. From it goes to left venrticle. From left ventricle it goes to all the body, but lungs. then from superior and inferior vena cave it again enters the left atrium.
The ductus venosus shunts most of the left umbilical vein blood flow directly to the inferior vena cava. This allows relatively highly oxygenated blood from the placenta to bypass the liver and get to the fetal brain.
a little oxygen and a lot of carbon dioxide
The Inferior vena cava - just like the Superior vena cava -, returns blood to the heart. When blood is returning to the heart, that blood is already circulated in the body, therefore it is already downloaded the oxygen to the body tissues, and picked up the carbon dioxide from them. From the vena cava (superior and inferior), the blood enters the heart (right atrium), is pumped into the right ventricle, and then pumped into the lungs (through the Pulmonary Arteries), where carbon dioxide is exchanged for oxygen. So, the blood in the vena cava is deoxygenated.
ductus venosus
Vena Cava.
Right atrium is where the blood enters through superior or inferior vena cava.
The function of the umbilical vein is to deliver oxygenated blood from the placenta to the fetus. From the placenta, the umbilical vein courses through the liver via the ductus venosus (fetal shunt), connecting then to the inferior vena cava.
blood first enters the heart through the right atrium.
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.
Inferior vena cava
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,...
The blood enters through the superior and inferior vena cava.
Blood enters the heart through the Inferior Vena Cava from all the regions of the body below the heart
Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium.
The mother's blood supply enters the foetus via the umbillical cord and allows oxygen to diffuse from the mother's blood into the foetus.