Question

Give two features of fetal circulation that directs most blood away from the lungs.

Answer 1

Hint: The foetus is the offspring of organisms that develop inside the mother's womb before birth and come from the embryo. By utilising the placenta, this infant obtains the nutrients and other chemicals required for growth from the mother.
The development of the foetus begins in the ninth week after fertilisation and continues until the baby is born.

Complete answer:
All of the major blood arteries and the heart are substantially developed by the third month of foetal development. Blood flow is often in the same direction as it is in an adult. There are, however, a few distinctions between postnatal and foetal circulation.
The circulatory system of the foetus, particularly the heart, develops early in the embryo's development. The foramen ovale is the septal hole that connects the right and left atriums. This opening allows blood to flow freely between the atriums.
In the umbilical veins, oxygenated blood rushes towards the foetus and into the heart. The umbilical arteries carry deoxygenated blood away from the foetus. The foetus takes oxygen from the uterus via the placenta, which is the next feature. The lungs of a foetus are virtually non-functional. As a result, foetal circulation has a number of traits that route the majority of blood away from the lungs.

Note:
With the help of the placenta, blood from the mother reaches the foetus. This placenta connects to the liver of the newborn. Because the liver is not fully mature, it uses some of the blood to grow. A bigger portion of the blood, however, travels to the inferior vena cava, where it is connected to the right atrium for circulation.