This article talk about the fetus yawning, and they explain why they yawn. Scientists scanned fetuses at 24, 28, 32 and 36 weeks gestation. They distinguished yawns from jaw openings by the timing of the action and shape of the fetuses mouths.
I think that is very interesting because I know that the fetus yawning but I don't know that their have to actions is very curious.
yawning -> bostezo
http://well.blogs.nytimes.com/2012/11/21/yawning-begins-early-though-noone-is-sure-why/
No hay comentarios:
Publicar un comentario