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andi andi
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7 years ago
In fetal circulation, the pressure is greatest in the:
 
  a. Right atrium.
  b. Left atrium.
  c. Hepatic system.
  d. Pulmonary veins.
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#1
7 years ago
A
Pressure in fetal circulation is greatest in the right atrium, which allows a right-to-left shunt-ing that aids in bypassing the lungs during intrauterine life.
The pressure increases in the left atrium after birth and will close the foramen ovale.
The liver does not filter the blood during fetal life until the end. It is functioning by birth.
Blood bypasses the pulmonary vein during fetal life.
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