The implantation of the blastocyst results from
A. enzymes digesting the endometrium around the blastocyst.
B. hCG stimulating the growth of trophoblast blood vessels.
C. the cessation of the reproductive cycle.
D. hyaluronic acid breaking down the myometrium around the blastocyst.
Answer: A
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-6.40 -7.42 -7.50 -7.30
Which condition listed is a sex chromosome aneuploidy, caused by the presence of a single X chromosome designated XO?
a) Emesis gravidarum b) Deformation c) Turner's syndrome d) Breech presentation e) Klinefelter's syndrome
Which of the following is an example of a flat bone?
Which of the following is an example of a flat bone? A. talus B. maxilla C. radius D. scapula
An important mechanism that controls metabolic pathways under physiological
conditions is A) negative feedback. B) genetic control. C) signal transduction. D) positive feedback.