- Estrogen low -> high (no granulosa cells or GnRH)
- FSH high -> low (Hypothalamus trying to create an egg = more GT hormones) All FSH bathing the follicle cells to stimulate formation of an egg and release estrogen
Ovarian Event
Nota:
- Development of egg
- Follicle cells (granulosa cells) release estrogen)
Uterus Event
Nota:
Uterus begins to form
Ovulatory Phase
Nota:
Half-way point (usually 14 days)
Uterus Event
Nota:
Endometrium continues to form
Ovarian Event
Nota:
Egg released from the ovary
Hormones
Nota:
- LH spikes
- Estrogen dips, FSH also spikes but that is non-functional
Luteal Phase
Nota:
15-28 days
Ovarian Event
Nota:
Corpus Luteum forms (from reformed granulosa cells) and produces estrogen and progesterone
Uterus Event
Nota:
Endometrium continues to form
Hormones
Nota:
- Progesterone rises (To maintain endometrium because might be pregnant so must get uterus ready)
- Estrogen rises (To build endometrium, made by Corpus Luteum)
Flow Phase
Nota:
1-5 days
Hormones
Nota:
Estrogen and Progesterone drop (no Corpus Luteum to make it)
Have no need to maintain or develop Endometrium