1 St. 28 Min, 7 Apr 2020 Jahr - Placentation
Beschreibung:
The placenta is fully developed around 14 - 16 weeks. When this organ becomes fully developed, it is responsible for providing nutrition, excretion, respiration, and endocrine function.
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1 St. 28 Min, 7 Apr 2020 Jahr
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~ 4 years ago