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The Endowment for Human Development
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Kidneys Produce Urine


8 weeks, 1 day

From The Biology of Prenatal Development.Buy Now

Script: By this time, kidneys produce urine which is released into the amniotic fluid.

In male embryos, the developing testes begin to produce and release testosterone.

The bones, joints, muscles, nerves, and blood vessels of the limbs closely resemble those in adults.

All ages referenced to fertilization, not last menstrual period.
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The Embryonic Period
The Embryonic Period
End of Embryonic Period
End of Embryonic Period
Kidneys Produce Urine
Kidneys Produce Urine
Eyelid Fusion
Eyelid Fusion
Breathing Motions
Breathing Motions
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4D Ultrasound
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