ANATOMICAL TRAVELOGUE / SCIENCE PHOTO LIBRARY ANATOMICAL TRAVELOGUE / SCIENCE PHOTO LIBRARY
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Computer-generated image reconstructed from scanned human data of a seven month old foetus. Actual size of foetus is over 12 inches. The age is calculated from the day of fertilization. The developing ear can be distinguished on the right side of the head. The eye is visible and is partially open. When the eyelids fuse, the eyes close for a period of time until around the twenty-sixth week of fetal, foetal development. At this time, they open partially and the eyelashes begin to develop. As the foetus continues to grow in size, the upper and lower limbs elongate. Fat, which serves as an insulator and energy source, forms during the seventeenth to twentieth weeks of fetal, foetal development. The skin smooths out and looks paler as the fat deposits accumulate underneath.
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