What is the primary function of the ductus venosus in fetal circulation?
Understand the Problem
The question is asking about the role of the ductus venosus in the circulation of blood in a fetus. Specifically, it wants to identify its primary function among the options provided, which involves understanding fetal anatomy and physiology.
Answer
The ductus venosus shunts oxygenated blood from the umbilical vein directly to the inferior vena cava, bypassing the liver.
The primary function of the ductus venosus in fetal circulation is to shunt oxygenated blood from the umbilical vein directly to the inferior vena cava, allowing it to bypass the liver.
Answer for screen readers
The primary function of the ductus venosus in fetal circulation is to shunt oxygenated blood from the umbilical vein directly to the inferior vena cava, allowing it to bypass the liver.
More Information
The ductus venosus plays a crucial role in fetal circulation by ensuring that a significant amount of oxygen-rich blood reaches vital organs, like the brain and heart, more quickly by bypassing the liver.
Tips
One common mistake is confusing the ductus venosus with the ductus arteriosus, which serves a different purpose in fetal circulation.
Sources
- Fetal Circulation - Stanford Medicine Children's Health - stanfordchildrens.org
- Ductus venosus - Wikipedia - en.wikipedia.org
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