File:Streeter1957 stage 23 plate01.jpg: Difference between revisions

Plate 1. Photographs of two embryos belonging to horizon xxiii

The superficial vascular plexus has spread nearly to the vertex of the head. A considerable growth in the length of the extremities has occurred in two days. The forearm is sometimes raised to a level above that of the shoulder, and the hands extend far out in front of the embryo. x2.5.

Figs. 72-75. No. 7425.

Figs. 76-79. No. 4570.

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

Reference

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.

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