From which primary germ layer is the thyroid gland derived?
A) Ectoderm
B) Mesoderm
C) Endoderm
Correct Answer:
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Q42: What structure produces estrogen and progesterone until
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Q44: From which primary germ layer is the
Q45: When does the embryonic period officially begin?
A)With
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Q48: Neural crest cells give rise to
A)melanocytes.
B)the adrenal
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Q73: Formation of the neural tube _.
A) begins
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