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In fetal circulation, the ductus arteriosus is a connective vessel between the pulmonary artery and aorta. It works as to bypass the lungs, which are collapsed in the womb. After birth, the ductus arteriosus normally closes.
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What structure is used to connect the aorta and the pulmonary artery in fetal circulation?
Ductus arteriosus
Does the presence of the ductus arteriosus increase or decrease the efficiency of the fetal circulation?
Increase
Why is it important for the fetal heart to have both the ductus arteriosus and the foramen ovale but not good for the adult heart to have these?
The ductus arteriosus and foramen ovale are important for systemic circulation. This is the type of circulation maintained by fetal pigs but the adult heart requires pulmonary and systemic circulation.
Why is it important for the fetal heart to have both the ductus arteriosus and the foramen ovale but not good for the adult heart to have these feature?
The ductus arteriosus and foramen ovale are important for systemic circulation. This is the type of circulation maintained by fetal pigs but the adult heart requires pulmonary and systemic circulation.
6 structures needed for fetal circulation?
Umbilical Arteries Placenta Umbilical Vein Ductus Venosus Foramen Ovale Ductus Arteriosus
How does the ductus arteriosus improved the efficiency of fetal circulation?
The Ductus arteriosus improves the efficiency of fetal circulation by creating a channal from the mother to the baby. This helps with circulation because oxygen travels from umbilical vein to the fetus which is important because the lungs of the unborm mamal are not functinal so it needs the supply of oxygen from the mother
Patent ductus arteriosus or posterior descending artery?
Also known as PDA. A condition in premature infants which causes abnormal fetal circulation
What is a fetal shunt between the aorta and the pulmonary trunk?
ductus arteriosus
What are the three shunt present in the fetal heart but not in adult heart?
The ductus arteriosus, formen ovale and ductus veinosus.
What adaptive advantage is gained by the ductus arteriosus' closure at birth in a fetal pig?
The ductus arteriosus closes at birth in pigs and becomes the ligamentum arteriosum. This allows the pulmonary artery to function properly.
How is the pulmonary circulation bypassed?
Before birth, via the ductus arteriosus
What is the fetal circulatory structure that carries blood with the lowest oxygen saturation?
Ductus arteriosus
