Human embryo: face
Numéro d’image : 11874914
| Endoscope image of the human embryo in the womb after approximately 6 weeks development,showing the face,centred on the retina of the eye (the dark,roughly circular area). Development of the eye occurs from 4th to 9th week: early stages result from a fold on the side of the forebrain (the primitive cerebral cortex). At 5 1/2 weeks this has become a hemispherical cup,the outer surface of which has formed the retina; the inner surface throws out a stalk which will form the optic nerve. The lens is also formed around this time,appearing as a transparent liquid-filled bag. After 9 weeks the lens has been covered with the cornea & eyelids begin to develop | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Edelmann |
| Taille de l’image : | 5041 px × 3405 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : |
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