By what week of prenatal development will the placenta be established?
A) week 4
B) week 8
C) week 12
D) week 16
Correct Answer:
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Q17: Which part of the embryo contributes to
Q18: Which extraembryonic membrane forms the embryonic part
Q19: Which of the following implants in,or attaches
Q20: After fertilization,a zygote rapidly divides to produce
Q21: What process starts at the embryonic period?
A)fertilization
B)formation
Q23: Cephalocaudal folding creates the:
A)head and buttocks regions.
B)digestive
Q24: By what week of prenatal development will
Q25: A birth defect known as spina bifida
Q26: What do the umbilical arteries transport?
A)oxygenated blood
Q27: The differentiation of the germ layers into
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