Which event occurs after the first trimester of human development?
A) Formation of a blastocyst
B) Formation of the placenta
C) Completion of lung maturation
D) Implantation
E) Gastrulation

Question

Quizplus · Accepted Answer

Completion of lung maturation occurs well after the first trimester, typically reaching a stage of sufficient development for survival outside the womb around the end of the second trimester into the third trimester. The other events listed occur during the first few weeks of pregnancy.

Which Event Occurs After the First Trimester of Human Development