Fetus in Womb, Week 21

Numéro d’image : 12650247
Fetus in Womb, Week 21
Medical visualization taken from human scanned data showing a fetus at 21 weeks within the womb. At this stage of development, fetal movement, breathing activity, and heart rate begin to follow daily cycles called circadian rhythms, the basic biological and behavioural rhythms that occur during a normal 24-hour cycle. This means the foetus' sleeping and waking periods are becoming more predictable. The fetus can now swallow, allowing for the absorption of glucose and water from the amniotic fluid, however is still nourished almost entirely by the placenta. The fetus is often about 7 (17 cm) long after 21 weeks, and weighs about 13.5 oz (383 g).
Licence : Droits gérés
Crédit: Science Photo Library / Science Source / TheVisualMD
Taille de l’image : 2000 px × 2366 px
Model Release : Non requis
Property Release : Non requis
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