Implantation
A) is accomplished as the trophoblastic cells break down the myometrium tissue
B) occurs during the secretory, or progestational, phase of the menstrual cycle
C) occurs within 24 hours after ovulation
D) is accomplished as the trophoblastic cells break down the myometrium tissue, and during the secretory, or progestational, phase of the menstrual cycle
E) all of these

Question

Quizplus · Accepted Answer

Implantation occurs during the secretory phase of the menstrual cycle, which is characterized by high levels of progesterone that prepare the endometrium for implantation.