When does the heart begin to develop?
A) week 1
B) week 3
C) week 5
D) week 7
E) week 9
Correct Answer:
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Q14: Which of the following occurs during the
Q15: Describe what occurs during cleavage,growth,morphogenesis,and differentiation.
Q16: Embryonic development begins with
A) fertilization.
B) the first
Q17: Which of the following is not derived
Q18: Which of the following is involved in
Q20: Which of these is associated with pre-embryonic
Q21: The white,greasy,cheeselike substance that covers the fetus's
Q22: What structure produces progesterone and estrogen during
Q23: The _ is the first embryonic membrane
Q24: The first system in the body to
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