The process in which the sperm cell and egg cell unite inside the fallopian tubes.

A single cell formed by a sperm cell and an egg cell.

A ball of cells formed as the zygote divides repeatedly.

A zygote develops into this 2 weeks after fertilization.

This is considered the start of pregnancy.

This is made up of membranes and blood vessels that connect the uterus to the embryo.

After its formation, this serves as the lifeline between the embryo and the mother.

The embryo at 10 weeks.

The date of birth of a full-term baby.

Babies born before full-term.

Severe pain that signals birth.

The diameter of the cervix dilation when the baby is ready to be born.

A technique used by doctors to assist conception.

A place where premature babies stay to maintain optimal temperature and other conditions.