The pulmonary artery is the artery that takes blood to the lungs to get oxygen. Because the fetus doesn't breathe, but rather gains oxygen from its mother, it doesn't need this artery as much, and so it doesn't develop as fast, so that more of the energy used for growth can be put where it's needed.
the pulmonary artery, coronary arteries and veins, inferior vena cava, branch arteries, and superior vena cava
The pulmonary circuit is commonly bypassed in fetal circulation. This is because fresh blood is provided by the mother to the fetus.
The only veins in an adult that carry oxygenated blood are the pulmonary veins, which carry blood from the lungs to the heart after it has been oxygenated. All other veins in the body carry relatively de-oxygenated blood.However in fetal circulation, the umbilical vein also carries oxygenated blood.Otherwise, arteries carry oxygenated blood to the body from the aorta and heart.
umbilical arteries
pulmonary artery, pulmonary vein, bronchioles
ductus arteriosus
the pulmonary artery carries oxygen poor blood and the pulmonary vein carries oxygen rich blood. the arteries that carry blood from the placenta to the fetus, carry oxygen-poor blood amd the vein that goes from the fetus to the placenta carries oxygen-rich blood.
A vessel called the ductus arteriosus (aka ductus Botalli) connects the pulmonary artery to the aorta in a developing fetus. Along with the foramen ovale, the hole connecting the fetal atria, this opening allows venous blood to bypass the non-functional lungs of the fetus and be pumped back into the arteries. Until birth, the oxygenation of fetal blood is through the umbilical cord.
The site of fetal development is the uterus. It refers to an organ that is found in the lower body of a woman or a female mammal.
A vessel called the ductus arteriosus (aka ductus Botalli) connects the pulmonary artery to the aorta in a developing fetus. Along with the foramen ovale, the hole connecting the fetal atria, this opening allows venous blood to bypass the non-functional lungs of the fetus and be pumped back into the arteries. Until birth, the oxygenation of fetal blood is through the umbilical cord.
because there is no blood to dilate the fetals vessels.
Embryology