Which is a TRUE statement about implantation of a blastocyst?
A)When it occurs outside the uterus,it is called a myopic pregnancy.
B)It normally occurs midway through the luteal phase.
C)It is a result of digestion of myometrial cells by enzymes in the trophoblast.
D)It occurs at a time in the cycle when plasma estrogen concentration is higher than progesterone concentration.
E)It occurs at the same time as,and is caused by,the LH surge.

Question

Quizplus · Accepted Answer

Implantation of the blastocyst normally occurs midway through the luteal phase of the menstrual cycle, which is approximately 6-7 days after ovulation.

Note: A is incorrect as a myopic pregnancy refers to a pregnancy that occurs within the wall of the uterus, not outside. C is incorrect as implantation occurs due to the interaction between the trophoblast and the endometrium, not by digestion of myometrial cells. D is incorrect as plasma progesterone concentration is higher than estrogen during the luteal phase. E is incorrect as the LH surge triggers ovulation but has no direct role in implantation.

Which Is a TRUE Statement About Implantation of a Blastocyst