Implantation
A) is accomplished as the trophoblastic cells break down the endometrial tissue.
B) occurs during the secretory, or progestational, phase of the menstrual cycle.
C) occurs within 24 hours after ovulation.
D) both (a) and (b) above.
E) all of these answers.

Question

Quizplus · Accepted Answer

Implantation involves trophoblastic cells interacting with the endometrial tissue and occurs during the secretory phase of the menstrual cycle, not within 24 hours after ovulation.