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What are the three shunt present in the fetal heart but not in adult heart?
The ductus arteriosus, formen ovale and ductus veinosus.
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.
What were Two remnants of fetal structures are observable in the heart what were they called in the fetal heart?
Fossa ovalis and ligamentum. Fossa ovalis -> foramen lovale Ligamentum-> Ductus arteriosus
Where would you look to find the remnant of the ductus arterious?
The remnant of the ductus arteriosus, known as the ligamentum arteriosum, can be found in the adult heart. It is located between the descending aorta and the left pulmonary artery. This fibrous structure is the result of the closure of the ductus arteriosus, which connects these two blood vessels during fetal development. In imaging studies, it may be visualized in the mediastinal area near the aortic arch.
What murmur radiates to the back?
Patent ductus arteriosus, or PDA, is a type of heart murmur that radiates to the back. It occurs when an infant's ductus arteriosus does not close after birth.
Where is the ligamentum arteriosum in the heart located?
The ligmentum arteriosum is the remnant of the ductus arteriosus in the fetal heart. The fossa ovalis is the remnant of the foramen ovale.
What is the fate of the ductus arteriosus?
The ductus arteriousus connects the pulmonary artery with the descending thoracic aorta, allowing the blood to enter into the fetal circulation without going through the lungs. This structure closes at birth and becomes the "ligamentum arteriosus."
What was the ligamentum arteriosum called in the fetal heart?
In the fetal heart it was called ductus arteriosis.
How does the ductus arteriosus affect the path of blood through the fetal heart?
It is an alternate way for the blood to flow during fetus development. The alternate blood flow before birth is necessary because the fetal lungs are not yet functioning.
What is located between the pulmonary trunk and the aorta?
Between the pulmonary trunk and the aorta is the ligamentum arteriosum, a fibrous remnant of the ductus arteriosus, which is a structure that connects these two major arteries during fetal development. In the fetus, the ductus arteriosus allows blood to bypass the non-functioning lungs. After birth, it typically closes and forms the ligamentum arteriosum. This structure lies in the mediastinum, specifically in the space above the heart.
What does the ductus arteriosus shunt blood away from?
The ductus arteriosus shunts blood away from the lungs, directing it from the pulmonary artery to the aorta before birth. This allows oxygen-rich blood from the placenta to bypass the non-functioning fetal lungs.
