Listed below are steps involved in conception and delivery. Arrange these steps in order from the first step to the last. Begin by placing the number 1 on the line in front of the term or phrase that represents the first step.

1. 4
expulsion of the placenta and cutting the umbilical cord
2. 1
development of an embryo and then a fetus
3. 2
contractions of the uterus and dilation of the cervix
4. 5
ovulation, fertilization, and implantation
5. 3
birth of the baby