It is NOT active in the developing fetus.
no
The pulmonary circuit is commonly bypassed in fetal circulation. This is because fresh blood is provided by the mother to the fetus.
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.
It is the underdevelopment of the lungs in a fetus
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.
Pulmonary circulation reduced in the human fetus because the baby gets its oxygen from its mother & it does not breath on its own.
The pulmonary circuit is to exchange respiratory gases between the blood and inhaled air. As a fetus is not yet breathing on its own but receives its oxygen from the mother through the umbilical vein it surpasses the normal function of the pulmonary circuit and is not necessary.
The ductus arteriosus is a shunt between the pulmonary and aortic trunks in the fetus. This shunt normally is closed at birth.
The organ where the developing fetus resides is called the uterus. This is where the fetus grows and matures inside the female.
A fetus is a developing baby.
a developing fetus receives nourishment from the placenta, which is burrowed into the uterus
Pulmonary vein