Along which line of the embryo does the primitive streak form?
A) dorsal-ventral
B) lateral-medial
C) right-left
D) cephalic-caudal
Correct Answer:
Verified
Q25: A birth defect known as spina bifida
Q26: What do the umbilical arteries transport?
A)oxygenated blood
Q27: The differentiation of the germ layers into
Q28: By which period of prenatal development will
Q29: What does gastrulation accomplish?
A)differentiation of germ layers
Q31: The rearrangement and migration of the cells
Q32: What connects the placenta to the fetus?
A)chorion
B)notochord
C)umbilical
Q33: What is the first major event of
Q34: During which process is exposure to teratogens
Q35: Which germ layer forms the gonads and
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