The cervix is the lower part of the uterus that opens into the vagina. During childbirth, the cervix expands about 4 inches (10 centimeters) so the baby can travel from the uterus, through the vagina, and into the world. The vagina is a tube that connects the uterus to the outside of the body.
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Answer:
Cervix
Explanation:
The cervix is the lower part of the uterus that opens into the vagina. During childbirth, the cervix expands about 4 inches (10 centimeters) so the baby can travel from the uterus, through the vagina, and into the world. The vagina is a tube that connects the uterus to the outside of the body.