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Explain how three landforms of the basin-and-range landscape assemblage have formed.
Foramen Ovale
An opening in the septum between the two atria of the heart in a fetus, which normally closes soon after birth.
Fetal Circulation
The circulatory system in a fetus that includes special structures like the umbilical cord, ductus arteriosus, and foramen ovale, facilitating the exchange of oxygen and nutrients between the fetus and mother.
Arterial Duct
A blood vessel in fetuses that connects the pulmonary artery to the descending aorta, allowing blood to bypass the lungs.
Umbilical Cord
Cord connecting the fetus to the placenta, through which blood vessels pass.
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