Seven-week-old embryo

Seven-week-old embryo

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Credit: CNRI/SCIENCE PHOTO LIBRARY

Caption: Seven-week-old embryo. The embryo may now measure up to 2 centimetres in length and weigh 1 gram. It has all the internal organs of an adult and the fingers and toes have become separate entities. Brain wave patterns can now be recorded and nerves and muscles work together for the first time. The skeletal system, although still cartilage, has developed (ribs seen). The facial features are still flat, but a nose can be detected and a tongue and milk teeth begin to bud. After eight weeks of development the embryo is known as a foetus.

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Keywords: anatomy, baby, child, developing, development, embryo, embryonic, fetus, foetal, foetus, human body, prenatal, reproduction, reproductive, seven, seven-week-old, unborn, weeks

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