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The Endowment for Human Development
The Endowment for Human Development
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Rolling Over


8 weeks

From The Biology of Prenatal Development.Buy Now

Script: Knjige o pediatriji opisujejo zmožnost prekucavanja, ki je sicer značilno za obdobje med 10 in 20 tednom po rojstvu. Vendar pa je to impresivno koordinirano gibanje vidno že veliko prej v okolju z nizko gravitacijo - v plodovniku, napolnjenim s tekočino. Ker otrok nima dovolj moči, ki je potrebna za preseg gravitacije, to novorojenčku onemogoča prekucevanja zunaj maternice.

All ages referenced to fertilization, not last menstrual period.
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The Highly Complex Brain
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Right- and Left-Handedness
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Rolling Over
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Spontaneous Movement
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