The umbilical cord of an 8-10 week human foetus,the strand of tissue containing the 2 spiralling arteries that carry blood to the placenta (the organ embedded in the uterine wall that interfaces the foetal & maternal circulations,exchanging nourishment & waste products) & 1 vein that returns it to the foetus. The role of the placenta is complex,being more than a filtration or exchange system; it may be considered as a multi- organ system for the developing foetus. It also assists the mother's body functions by synthesising a range of steroid hormones,similar to those manufactured by the pituitary gland | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Edelmann |
Bildgröße: | 4438 px × 3309 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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