They don’t cut them too short. The rest of the umbilical cord, the stump part, naturally falls off of a newborn after some time. Bellybutton is a naturally formed type of scar.
we also have cartilege inside us where blood vessels previously had bypasses, as blood kinda flows in reverse when the umbilical system is active.
It’s kind of insane, infants switch their whole circulatory system around at birth. Looking at it you’d think it’s a horribly fragile system but clearly it’s extremely reliable!
They don’t cut them too short. The rest of the umbilical cord, the stump part, naturally falls off of a newborn after some time. Bellybutton is a naturally formed type of scar.
we also have cartilege inside us where blood vessels previously had bypasses, as blood kinda flows in reverse when the umbilical system is active.
It’s kind of insane, infants switch their whole circulatory system around at birth. Looking at it you’d think it’s a horribly fragile system but clearly it’s extremely reliable!