- Hormones: Luteinizing hormone (LH) and follicle-stimulating hormone (FSH)
LH: triggers release of egg from ovary
FSH: triggers the growth of eggs in the ovaries and gets the eggs ready for
ovulation
- when estrogen peaks, there is a surge of LH
day 14
- egg is released and swept into fallopian tube, egg name changes to ovum
- egg only lives for 24 hours
- most common site of fertilization is in the ampulla of the fallopian tube
Luteal Phase
days 15- 28
- prepares for possible pregnancy
, - Corpus Luteum has formed and stays in place for 14 days if there is a pregnancy
then disintegrates if no pregnancy
- if fertilization occurs, corpus luteum stays intact until placenta takes over
Uterine/Endometrium Cycle
- menstrual
- proliferative
- secretory
Menstrual Phase
days 1-6
- woman is shedding layer of endometrium called the stratum functionalis
- bleeding is the shedding and occurs because there was no pregnancy
Proliferative Phase
days 7-14
- stratum functionalis starts rebuilding and cervical mucus becomes thin for sperm
- Hormones: Estrogen and Progesterone
- Estrogen: thickens the lining of your uterus
- Progesterone: prepare the endometrium for implantation
Secretory Phase
days 15- 28
- endometrium is ready for implantation
- supports growing fetus
Ischemic Phase
- occurs when fertilization does not happen, progesterone levels drop
Menarche
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