Embryo. A five week old human embryo. Its crown-rump length from the vertex of the skull to the mid-point of the buttocks is about 10-12mm. At this stage the back of the embryo (bottom) grows more rapidly than the front giving the embryo a c-shape. The buds of the limbs are visible as round areas at top left and bottom centre. A rudimentary eye is seen in the head (upper centre right) as a round feature. At five weeks all the internal organs such as the liver,pancreas,heart,and lungs have begun to form; this is the period in which the embryo is at the greatest risk of birth defects due to genetic or external factors | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / PROFESSORS P.M. MOTTA & S. MAKABE |
Bildgröße: | 2875 px × 3425 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |