File:Streeter1957 stage 22 plate01.jpg

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Plate 1. Photographs of three embryos belonging to horizon xxii

Evidence of growth of the eyelids is apparent in all the embryos of horizons xix to xxiii. The eyes are more than half covered by the lids in specimens of age group xxii. The extremities have increased in length, and the digits touch or overlap. x3.

Figs. 63-65 No. 6701.

Figs. 66-68 No. 6832.

Figs. 69-71 No. 8394.

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Links: 1 Graph Embryos 11-23 | 4 Eye and optic nerve 19-23 | Plate 1 - Cornea | Plate 2 - Hypophysis


Streeter GL. Developmental Horizons In Human Embryos Description Or Age Groups XIX, XX, XXI, XXII, And XXIII, Being The Fifth Issue Of A Survey Of The Carnegie Collection. (1957) Carnegie Instn. Wash. Publ. 611, Contrib. Embryol., 36: 167-196.

Cite this page: Hill, M.A. (2024, May 22) Embryology Streeter1957 stage 22 plate01.jpg. Retrieved from

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