26 Nov 2001 Jahr - Embryo

Beschreibung:

The embryo will start to develop in the lining of the womb. The outer cell links with the mother's blood supply. The inner cell will form into 3 layers each with their own task. The inner layer will become the respiratory system and digestive system, the middle layer will become the heart, blood vessels, muscles and bones, the outer layer will become the brain, nervous system, the eye lenses, tooth enamel, skin and nails.

Source
“Pregnancy and Baby Guide.” NHS Choices, NHS, www.nhs.uk/Conditions/pregnancy-and-baby/pages/pregnancy-weeks-17-18-19-20.aspx.

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