Although the placenta acts as a filter for many harmful substances, some are able to pass from mother to embryo. They include
A) alcohol.
B) toxins in cigarette smoke.
C) caffeine.
D) drugs.
E) all of these.
Correct Answer:
Verified
Q70: Extraembryonic membranes arise from the
A) embryonic disk.
B)
Q71: The first evidence of where the nerve
Q72: The outermost membrane that forms the majority
Q73: The chorion develops from the
A) trophoblast.
B) blastocyst.
C)
Q74: Chorionic villi contain
A) germ cells.
B) lymphatic vessels.
C)
Q75: Although the placenta acts as a filter
Q76: Which of the following is NOT considered
Q77: An embryo with two X chromosomes will
Q79: The embryo is designated a fetus by
Q80: Which hormone prevents the endometrium from breaking
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