The Various Systems and Organs of the Fetus Develop at Different

Multiple Choice

The various systems and organs of the fetus develop at different stages.Which statement is most accurate?

A) Cardiovascular system is the first organ system to function in the developing human.
B) Hematopoiesis originating in the yolk sac begins in the liver at 10 weeks of gestation.
C) Body changes from straight to C-shape occurs at 8 weeks of gestation.
D) Gastrointestinal system is mature at 32 weeks of gestation.