10 ore 41 min, 22 apr 2002 anni - Bones

Descrizione:

At week thirty-three the baby's bones will harden. But the skull of the baby will remain soft & flexible. Its pupils may also change size in response to a stimulus caused by light.

Source
“Fetal development: What happens during the 3rd trimester?” Mayo Clinic, Mayo Foundation for Medical Education and Research, 6 July 2017, www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/in-depth/fetal-development/art-20045997?pg=2.