Editing Infant (section)

===Umbilical cord===
{{Main|Adaptation to extrauterine life}}
The [[umbilical cord]] of a newborn is bluish-white in color. After birth, the umbilical cord is normally cut, leaving a 1–2&nbsp;inch stub. The umbilical stub will dry out, shrivel, darken, and spontaneously fall off within about 3 weeks. This will later become a belly-button after it heals.

The umbilical cord contains three vessels: two arteries and one vein. The two arteries carry blood from the baby to the placenta while one vein carries blood back to the baby.