In-Utero

In-Utero(mouse)

http://www.medicinenet.com/pregnancy/article.htm

http://stemcells.nih.gov/info/scireport/appendixa.asp

http://www.physorg.com/news/2011-01-brain-wiring-babies.html

http://www.indiana.edu/~anat550/cvanim/fetcirc/fetcirc.html

http://en.wikipedia.org/wiki/Umbilical_cord

Connection to fetal circulatory system

The umbilical cord enters the fetus via the abdomen, at the point which (after separation) will become the umbilicus (or navel). Within the fetus, the umbilical vein continues towards the transverse fissure of the liver, where it splits into two. One of these branches joins with the hepatic portal vein (connecting to its left branch), which carries blood into the liver. The second branch (known as the ductus venosus) allows the majority of the incoming blood (approximately 80%) to bypass the liver and flow via the left hepatic vein into the inferior vena cava, which carries blood towards the heart. The two umbilical arteries branch from the internal iliac arteries, and pass on either side of the urinary bladder before joining the umbilical cord.