The placenta of a twin birth - the left side was Twin A and he weighed 2 pounds more than Twin B (whose home was on the right). Notice Twin B's velamentous insertion - where the cord implants into the amniotic sac instead of the placenta proper. The blood vessels can be seen crawling up towards the umbilical cord. If the membranes had ruptured over any of the area that contained the vessels, the baby would have hemorrhaged. (In all these years, I have only heard of that happening a couple of times - one was a recent client.)
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Response: Laser Hair Removal- Navelgazing Midwife Blog - Word Search - Velamentous Insertion