Estradiol amounts rise during the ___________ phase of the endometrial menstrual cycle.
A)proliferative
B)menstrual
C)secretory
D)follicular

Question

Quizplus · Accepted Answer

Estradiol is produced by the developing follicles in the ovary during the follicular phase of the menstrual cycle, which corresponds to the proliferative phase of the endometrial cycle. Estradiol levels peak just before ovulation, which marks the transition from the follicular phase to the luteal phase. During the luteal phase, progesterone levels rise and the endometrium enters the secretory phase. Estradiol levels remain relatively low during this phase. Finally, if fertilization does not occur, progesterone and estradiol levels drop, triggering menstruation, which marks the beginning of the menstrual and follicular phases once again.

Estradiol Amounts Rise During the ___________ Phase of the Endometrial