Gestation
A) is the time from fertilization to embryo formation.
B) is the time from fertilization to birth.
C) lasts about 280 days from the last menstruation.
D) is the time from fertilization to birth and lasts about 280 days from the last menstruation are correct.
Correct Answer:
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Q32: A typical pregnancy test detects the presence
Q33: What important event does NOT occur in
Q34: From which primary germ layer does the
Q35: The pre-embryonic structure created by cleavage is
Q36: From which primary germ layer do both
Q38: The fetus is surrounded by a protective
Q39: Embryonic development
A)refers to the first week.
B)refers to
Q40: The amnion
A)is the first site of blood
Q41: The placenta is composed of
A)chorionic villi.
B)uterine tissue.
C)fetal
Q42: During the third and fourth months,
A)lanugo covers
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