Osmosis from Elsevier - During fetal life, the lungs are filled with fluid and have high vascular resistance, so they don't participate in gas exchange. Instead, the placenta serves as the organ
Increased resistance to blood flow in the umbilical artery in nuchal... | Download Scientific Diagram
What type of blood do each of the umbilical blood vessels carry? | Socratic
Benefits of ventilation of the lungs with an intact umbilical cord:... | Download Scientific Diagram
Fetal Circulation | American Heart Association
Children | Free Full-Text | The Fetus Can Teach Us: Oxygen and the Pulmonary Vasculature