Here's a simple breakdown:
* Uterus: Where the calf develops during pregnancy.
* Cervix: A muscular ring that acts as a barrier between the uterus and the vagina. It keeps the uterus closed during pregnancy and opens during labor.
* Vagina: The passage that connects the cervix to the outside of the cow's body.
Think of it as a passageway between the uterus and the outside world, with the cervix acting as the gatekeeper!