Childbirth refers to delivering a baby from its mother's uterus by means of contractions after gestation period ends at around 40 weeks.
The tightening and relaxing of uterine muscles during childbirth that help push the baby out.
Gestation Period: The time period between conception and birth when the baby grows and develops inside the mother's womb.
Birth Canal: The passage consisting of the uterus, cervix, vagina and vulva from which a baby exits during childbirth.