✦ LIBER ✦

On the modes of development of the mesoderm and mesenchym, with reference to the supposed homologies of the body cavities

✍ Scribed by Thos. H. Montgomery Jr.

Book ID: 102903315
Publisher: John Wiley and Sons
Year: 1897
Tongue: English
Weight: 599 KB
Volume: 12
Category: Article
ISSN: 0362-2525
DOI: 10.1002/jmor.1050120203

No coin nor oath required. For personal study only.

✦ Synopsis

MESODEI~M is the term broadly applied to that embryonic cell mass situated between the primitive ecto-and entoderm. T h e mesoderm, i.e., mesodermal cells, and not the extracellular gelatinous substance secreted in the archicoel by the ecto-and entodermic cells, is derived either from one of these two layers or from both of them. I t is derived ( I ) from the ectoderm in the Anthozoa, Porifera ; ( 2 ) from the entoderm in Ctenophora, Polycladidea, Nemertini (in part), Nematodca, Annclidn, Hi1 - udinca (?),

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