Placenta
by the science technology
The umbilical cord supplies the fetus' oxygen.
The organ where the developing fetus resides is called the uterus. This is where the fetus grows and matures inside the female.
Fetus
the placenta
The heart is the first organ to develop in a fetus. Together, blood and the circulatory system, that is powered by the heart, form the first organ system.
Placenta
The Placenta
placenta
fetus
The Heart.
what are the flow of the uterine lining material from the body