File:Aves Transverse sections through embryo fifth day after incubation.jpg

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Fig. 98. — Transverse sections tbrough embryo Chick after Remak (magnified about 20 times). Fifth day after incubation.

fc, horn-plate ; mr, spinal tube ; ung, primitive kidney duct ; un, primitive kidney vesicle ; hp, skin-fibrous layer ; m = mu = mp, muscleplate ; itw, primitive vertebral plate (wh, membranous formation of the vertebral body ; wh, of the vertebral arch ; wb, of the rib, or transverse apophysis) ; uwh, primitive vertebral cavity ; eh, spinal axis, or notochord ; sh, notochord-sheath ; bh, ventral wall ; g, posterior ; v, anterior nerve roots of the spinal marrow ; a = af = am, amnion-fold ; p, bodycavity, or coelom ; df, intestinal-fibrous layer ; ao, primitive aortae ; sa, secondary aorta; vc, principal veins; d = dd, intestinal-glandular layer; dr, intestinal groove.
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Source https://archive.org/details/cu31924024561114/page/308/mode/1up?view=theater&q=240 The evolution of man: a popular exposition of the principal points of human ontogeny and phylogeny. Appleton New York
Author Haeckel, Ernst Heinrich Philipp August

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current11:23, 17 March 2024Thumbnail for version as of 11:23, 17 March 2024688 × 755 (357 KB)Rasbak (talk | contribs){{Information |description=Fig. 98. — Transverse sections tbrough embryo Chick after Remak (magnified about 20 times). Fifth day after incubation. fc, horn-plate ; mr, spinal tube ; ung, primitive kidney duct ; un, primitive kidney vesicle ; hp, skin-fibrous layer ; m = mu = mp, muscleplate ; itw, primitive vertebral plate (wh, membranous formation of the vertebral body ; wh, of the vertebral arch ; wb, of the rib, or transverse apophysis) ; uwh, primitive vertebral cavity ; eh, spinal axis,...

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