The microscopic anatomy and ultrastructure of the contractile vessel in the sipunculan Themiste hexadactyla (Satô, 1930) (Sipuncula: Sipunculidea)

@article{Adrianov2014TheMA,
  title={The microscopic anatomy and ultrastructure of the contractile vessel in the sipunculan Themiste hexadactyla (Sat{\^o}, 1930) (Sipuncula: Sipunculidea)},
  author={A. Adrianov and A. Maiorova},
  journal={Russian Journal of Marine Biology},
  year={2014},
  volume={40},
  pages={303-312}
}
The microscopic anatomy and ultrastructure of the contractile vessel of the sipunculan Themiste hexadactyla (Satô, 1930) from Vostok Bay (the Sea of Japan) were studied by histological and electron microscope methods. The ultrastructural features of the internal (endothelium) and external (coelothelium) lining of the contractile vessel are described and illustrated. Numerous macromolecular filters, the so-called “double diaphragms,” were found in the external coelothelium facing the cavity of… Expand

Figures from this paper

Body cavities in bryozoans: Functional and phylogenetic implications
TLDR
The observed partitioning of the body cavity in bryozoans differs from that in phoronids and brachiopods, and contradicts the Lophophorata concept. Expand

References

SHOWING 1-10 OF 54 REFERENCES
Microscopic Anatomy and Ultrastructure of Nephridium in the Sipunculan Thysanocardia nigra Ikeda, 1904 from the Sea of Japan
The microscopic anatomy and ultrastructure of nephridium have been studied in the sipunculan Thysanocardia nigra Ikeda, 1904 (Sipuncula, Sipunculidea) from the Sea of Japan using histological andExpand
Microscopic Anatomy and Ultrastructure of a Polian Vessel in the Sipunculan Thysanocardia nigra Ikeda, 1904 from the Sea of Japan
TLDR
It is concluded from an analysis of the ultrastructural features of the vessel wall that coelomic fluid may be filtered from the tentacularcoelom to the trunk coelom via the wall of the Polian vessel. Expand
Ultrastructure of tentacles in the sipunculid worm Thysanocardia nigra Ikeda, 1904 (Sipuncula)
TLDR
The ultrastructure of the tentacles was studied in the sipunculid worm Thysanocardia nigra to show similarities and differences in the tentacle morphology, which shows a highly complex morphology. Expand
Ultrastructure of the tentacles of Themiste lageniformis (Sipuncula)
SummaryAn ultrastructural study of the tentacles of Themiste lageniformis (Sipuncula) was conducted as part of a larger study of head metamorphosis in the species.The oral surface of the tentacles isExpand
Functional organization of dermal coelomic canals in Sipunculus nudus (Sipuncula) with a discussion of respiratory designs in sipunculans
TLDR
It is suggested that sipunculan species fall into three functional categories based on the body region or regions used for environmental gas exchange, including "Tentacle breathers", "integumentary breathers" and "Integumentary Breathers". Expand
Microscopic Anatomy of the Tentacles of Thysanocardia nigra Ikeda, 1904 (Sipuncula) from the Sea of Japan
TLDR
The filtering apparatus of Thysanocardia shows remarkable similarities with a filtering system of sabellid polychaetes, upon which food particles can be trapped. Expand
Development of the tentacular apparatus in sipunculans (Sipuncula): I. Thysanocardia nigra (Ikeda, 1904) and Themiste pyroides (Chamberlin, 1920)
TLDR
In both species, the distinct sympodial pattern in the arrangement of tentacles in the tentacular apparatus is well evidenced by the outlines of the ciliary oral grooves. Expand
Ultrastructure of the Coelomocytes in the Tentacular Coelom of Thysanocardia nigra Ikeda, 1904 (Sipuncula)
Free-floating coelomocytes in the tentacular coelomic cavity of the sipunculan Thysanocardia nigra Ikeda, 1904, were studied using light interference contrast microscopy and scanning and transmissionExpand
Evolutionary Origin of the Vertebrate Nephron
TLDR
Comparative morphology of adult and larval invertebrates suggests that filtration excretory organs, as protonephridia and metanephridial systems, evolved in the lineage to the bilaterally symmetrical animals and each consisted minimally of a filTration cell, a urinary compartment, and tubule joined to the exterior. Expand
The Organization and Origin of the Circulatory System of Phoronida (Lophophorata)
TLDR
Despite their general primitive anatomy, Phoronida have a structurally complex, closed circulatory system. Expand
...
1
2
3
4
5
...