Which phases are included in the ovarian cycle?
Correct Answer: D
Rationale: The correct answer is D because the ovarian cycle includes the follicular phase (development of ovarian follicles) and the luteal phase (release of the egg and formation of the corpus luteum). The other choices are incorrect because:
A: Proliferative and secretory phases refer to phases of the menstrual cycle, not the ovarian cycle.
B: Estrogen and progesterone are hormones involved in the ovarian cycle, but they do not represent the phases themselves.
C: Endometrial and luteal phases involve the uterus and not specifically the ovary.