5 St. 55 Min, 31 März 2003 Jahr - Joints Function, Bones Develop, Umbilical Cord Thickens

Beschreibung:

Those little flaps have grown a lot now. There's now something hard that keeps it's shape, but I don't know what it is. I can now bend the flap, it's in two pieces. I also feel this thing on my abdomen that's getting larger, but I don't know what it is. Bone Development, droualb.faculty.mjc.edu/Lecture%20Notes/Unit%202/bone_development_with%20figures.htm.

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