The external reproductive organs can be distinguished by the __________ week of development.
A) eighth
B) twelfth
C) fifteenth
D) twentieth
Correct Answer:
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Q6: The ductus arteriosus allows fetal blood to
Q7: During the early stages of pregnancy, the
Q8: Describe the blood that is passing through
Q9: What blood vessel carries blood from the
Q10: How many major blood vessels are typically
Q12: Sperm movement is aided by the presence
Q13: Within a blastocyst, what group of cells
Q14: The union of a secondary oocyte and
Q15: What enzyme, located on the sperm cell
Q16: What forms the placental membrane?
A) The embryonic
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