Which of the Following Changes Occur During the Third Trimester

Question

Which of the following changes occur during the third trimester?
A) Completion of pulmonary branching and alveolar formation.
B) Formation of the plicae of the intestines.
C) Completion of the formation of the nephrons.
D) In male fetuses, the testes descend.
E) All of the answers are correct.

Accepted Answer

All the listed changes occur during the third trimester of pregnancy. Pulmonary branching and alveolar formation are completed, allowing the baby to breathe air at birth. The intestines form plicae, increasing the surface area for nutrient absorption. Nephron formation in the kidneys is completed, essential for fluid and electrolyte balance. In male fetuses, the testes descend into the scrotum, a crucial step in the development of the reproductive system.