Differences in male and female gametogenesis:

Females: Males:
ovaries testes
1 gamete parent cell 4 gamete parent cells
large,nonmotile, full of nutrients Small, motile few nutrients
oogenesis completed with sperm oogenesis completed before sperm is out of testes













Hormones & the Menstrual System:


4 hormones control menstrual system

• Menstruation happens when Estrogen and progesterone are low
• Progesterone causes lining of the uterus to thicken
• When LH peaks it causes ovulation
• Hypathalamus tells Auterior Pituitar to release LH
• If 1 hormone does not work the system will not work
• synchronize ovarian and menstrual cycles

Goal of female cycle: to get ready for fertilization(just in case)


4 Phases of Menstrual Cycle:

1. Menstruation-about day 1-5, lining leaves the body
2. Follicle-follicle matures
3. Ovulation-day 14, mature egg released from ovary
4. Luteal-development of the corpus luteum