Fetal Development: Week 6
6 weeks after conception (42 days or 1 ½ months)
(8 weeks after the last menstrual period)
The embryo is about the size of a blueberry or 3/8 – 1/2 inch (0.38-0.5 inches) long. The head is large in comparison to the trunk. The eyes are forming and look like black rings on the sides of the head. The limb buds become flattened for the hand and footplates to develop. The bronchial buds, lymphatic system and kidneys are forming.
A blueberry fruit is 0.20-0.63 inches