The human embryo after about 2 months development, showing the arm & hand, & to the right the umbilical cord carrying 2 ateries & 1 vein to the placen
The human embryo after about 2 months development, showing the arm & hand, & to the right the umbilical cord carrying 2 ateries & 1 vein to the placenta, an organ implanted into the uterine wall (endometrium) which exchanges nourishment & waste products with the maternal circulation. The arms appear on the body around the 24th day (the legs appear 2 days later, leg growth lagging behind that of the arms even in the postnatal infant).
Size: 4661px × 3156px
Photo credit: © EDELMANN/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
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