nephridia

(b) Certain tubuli described by Weiss as situated in a series along the upper corners of the atrial cavity, and communicating, after the fashion, of the "nephridia" of the earthworm, with the coelom and with the exterior (or, rather, with that portion of the animal's exterior enclosed in by the atrial wall; compare Section 6).

Text Book of Biology, Part 1: Vertebrata 1906

The Annelid theory was firmly supported by Eisig, who in his elaborate monograph on the _Capitellidæ_ [410] maintained against Fürbringer the genetic identity of the Annelidan nephridia with the kidney tubules of

Form and Function A Contribution to the History of Animal Morphology

F.M. Balfour, who pointed out about the same time as Semper the analogy between the nephridia of Annelids and the mesonephric tubules of

Form and Function A Contribution to the History of Animal Morphology

In his first paper Semper does little more than break ground; he insists on the fact that both Annelids and Vertebrates are segmented animals, and he points out how close is the analogy between the nephridia or

Form and Function A Contribution to the History of Animal Morphology

T.e independent discovery by E. Meyer [411] and J.T. Cunningham, [412] of an internal segmental duct in _Lanice_, into which several nephridia opened, seemed to strengthen this view.

Form and Function A Contribution to the History of Animal Morphology

These tubuli are the segmental tubes or nephridia.

Text Book of Biology, Part 1: Vertebrata 1906

Of the two parts that compose the comb-shaped primitive kidney the longitudinal channel, or nephroduct, is always the first to appear; afterwards the transverse "canals," the excreting nephridia, are formed in the mesoderm; and after this again the

The Evolution of Man — Volume 2 Ernst Heinrich Philipp August Haeckel 1876

With the former they share the lack of body-cavity, anus, and vascular system; with the latter they have in common the bilateral type, the possession of a pair of nephridia or renal canals, and the formation of a vertical brain or cerebral ganglion.

The Evolution of Man — Volume 2 Ernst Heinrich Philipp August Haeckel 1876

One of the oldest and most important of these are the kidneys or nephridia, which remove unusable matter from the body (Figure 2.240 nc).

The Evolution of Man — Volume 2 Ernst Heinrich Philipp August Haeckel 1876

The chief advances were the formation of gonads and nephridia, and of the rudimentary brain.

The Evolution of Man — Volume 2 Ernst Heinrich Philipp August Haeckel 1876