Human embryo at 7 weeks gestation, measuring approximately 14 mm (crown to rump). the fingers and face are developing and growing rapidly but are still forming their shape. It is possible to clearly see the formation of the skull, which begins to close, which will form the fontanelle (“soft spots”) that subsequently shut as children grow, creating a suture in the skull. This openness facilitates at birth in normal delivery, and allows the growth of the child’s brain.