Multiple Choice
What key developmental task initiates the beginning of the embryonic stage?
A) The placenta becomes functional
B) The beginning of the fetal heartbeat
C) The formation of the germ layers
D) The development of a yolk sac
Correct Answer:

Verified
Correct Answer:
Verified
Related Questions
Q26: Which statement about the amnion is accurate?<br>A)
Q27: The mesoderm gives rise to<br>A) cardiac muscle.<br>B)
Q28: Late in pregnancy, the uterus normally exhibits
Q29: What are the germ layers, and from
Q30: During lactation, the release of which hormone
Q31: When is the fetal respiratory system first
Q32: Blood returns to the fetus from the
Q33: What is human chorionic gonadotropin, and what
Q34: The progressive thinning of the cervical walls
Q35: The layer of cells and gel-like membrane