The ___________ folds over to form the __________,which will become the spinal cord and brain.
A) mesoderm;neuron tract
B) ectoderm;neural tube
C) endoderm;neural tube
D) ectoderm;neuron tract
Correct Answer:
Verified
Q1: During the _ month of pregnancy,the embryo
Q3: At the beginning of the period of
Q5: The _ eventually becomes the muscles,skeleton,circulatory system,and
Q6: The male produces an average of _
Q7: The outer ring of cells on a
Q8: The placenta _.
A) forms in the second
Q8: The umbilical cord
A)appears as a tiny stalk
Q9: The _ produces blood cells until the
Q11: Following fertilization,a one-celled _ multiplies and forms
Q38: The amnion
A) develops into the nervous system
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