The first system to be visually evident is the
A) muscular system.
B) cardiovascular system.
C) skeletal system.
D) nervous system.
Correct Answer:
Verified
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
Q43: Maternal and fetal blood supplies mix to
Q45: During the fourth and fifth weeks
A)all organ
Q46: The heart begins as two tubes that
Q47: The completion of a functioning placenta marks
Q48: Which hormone functions to maintain the corpus
Q49: The gender of the individual is determined
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