Jacky Chan 7 Cervix uteri 8 Portio vaginalis

Jacky Chan

7. Cervix uteri 8. Portio vaginalis cervicis 9. Vagina 10. Vestiblum vaginae 11. Bladder 12. clitoris 1. Ovary 2. Ampulla 3. Uterine horn 4. Bifurcation of uterine horns 5. Uterine broad ligament 6. Uterine body

Ovulation fossa

Functional structures: 1. Follicles 2. Corpus luteum

Development of the follicles 2 x 106 Oogonium 40 x 103 Primary oocyst 400 Secondary oocyst

Mare Bitch Cow 子宮 Ewe Sow

Cervix Cow Sow Mare

Cyclic change of Hypothalamus. Hypophysis-ovary axis Days Estrogen Uterus Ovary Follicular phase

犬的動情週期 • 狗是單發情的動物（monoestrus animal）。 其動情週期分為四期： Anestrus until next breeding period Diestrus(ca. 50 -80 days) (including pseudopregnancy) Proestrus Estrus (5 -9 days) (ca. 7 -9 days) Estrus usually overlaps metestrus Pregnancy Metestrus (58 -63 days) (2 days)

假懷孕（pseudopregnancy）

surge

Superfecundity: getting pregnant by multiple tomcats Superfetation: getting pregnant while pregnant

Alpaca Llama

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