CĂRȚI ÎN ENGLEZĂ ÎN LEGĂTURĂ CU «ENTEROCOELIC»
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The enterocoelic theory would raise no doubts if only Deuterostomia were
involved. Deuterostomia are, in fact, naturally derived from animals at the
ctenophore level. Important supplementary arguments in favour of the great
antiquity of ...
2
A Complete Course in ISC Biology
Enterocoelic Development : It is found in echino- derms and chordates (the
deuterostomes). The coelom arises by the outpocketing of the embryonic gut or
archenteron. These pouches pinch off, enlarge and come to lie in the blastocoel.
V. B. Rastogi, B. Kishore, 1997
Thus, in the early stage, the mesodcrm formsa series of segmentally arranged
mesodermal or enterocoelic pouches. Separation of these pouches begins from
the anterior end and proceeds backwards. Each pouch is now a hollow sac
called ...
4
Modern Text Book of Zoology: Vertebrates
Coelom is enterocoelic and not schizocoelic as in annelids. The flow of blood in
main blood vessels is in opposite directions in the two groups. Above all, the
three basic chordate characters of Cephalochordata are not present in Annelida.
2.
5
Invertebrate Relationships: Patterns in Animal Evolution
But the various gastraea-type phases that these authors support, being so closely
tied to enterocoelic theories, have difficulty in accounting for the diversity of
modem coelomate embryology (chapter 5) and for the very existence of many ...
6
The Work of John Samuel Budgett Balfour Student of the ...
They may be interpreted in three different ways: (1) they may be homodynamous
with the visceral clefts, (2) they may represent a pair of enterocoelic pouches
homodynamous with the coelomic segments, or (3) they may be organs simply
sui ...
7
Modern Text Book of Zoology: Invertebrates
A-C— Transformation of enterocoelic poucnes of a radiate ancestor into coelomic
pouches of a bilateral ancestor. D-E-Loss of protocoel and mesocoel. F-G —
Subdivision of metacoel producing primary metameres. Table 1. Differences ...
ENTEROCOELOM Coelom arises by splitting ol embryonic mesoderm Coelom
arises as a series of enterocoelic pouches from the embryonic archenteron (gut) I
GONOCOELOM Segmentally arranged gonadial cavilies form coelomic pouches
...
9
Principles of Comparative Anatomy of Invertebrates: Organology
The enterocoelic theory thus includes the gono- coelic theory, but in a somewhat
modified form; the homologues of the coelom are not the genital follicles of
turbellarians and nemertines, but the peripheral canals or chambers of
coelenterates.
Vladimir Nikolaevich Beklemishev, Z. Kabata, 1969
10
An Introduction to the Invertebrates
... and 61 PROTOSTOMES AND DEUTEROSTOMES. Developmentalstage
Protostome Deuterostome Cleavage Spiral Radial Fateof blastopore Mouth Anus
Mesoderm Earlydetermined Gutout-pouching andcoelom schizocoelic
enterocoelic.
