Document Detail

Anatomical and ultrastructural study of the pharyngeal bulb in Protodrilus (Polychaeta, Archiannelida) II. The stomodeal and its cuticle.
MedLine Citation:
PMID:  675667     Owner:  NLM     Status:  MEDLINE    
The epidermal and stomodeal cuticles of Protodrilus are described then compared. The thin epidermal cuticle, the thickness of which is about the same over all the body, is characterized both by the absence of fibrils in its deepest part and by the extension of epidermal microvilli above the cuticle. The stomodeal cuticle, the thickness of which is as variable as that of the epithelium, presents two layers of fibrils comparable to the collagen fibrils described in the cuticle of other Annelida, as well as a relatively diversified supramicrovillous coating. The anterior cuticular thickening or grating plate, is characterized by the length of the epithelial microvilli, the thickness of the cuticular matrix and the superficial cuticular zone with supramicrovillous denticles supported by an axis of fibrous bundles. In the stomodeal cuticle, the fibrillar material seems to give to the cuticle best resistance to deformation during the pharyngeal bulb contraction, while an especially elaborated supramicrovillous coating is found in regions most exposed to friction. These features contrast with the relative simplicity of the epidermal cuticle.
C Jouin
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Tissue & cell     Volume:  10     ISSN:  0040-8166     ISO Abbreviation:  Tissue Cell     Publication Date:  1978  
Date Detail:
Created Date:  1978-09-15     Completed Date:  1978-09-15     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0214745     Medline TA:  Tissue Cell     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  289-301     Citation Subset:  IM    
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MeSH Terms
Endoplasmic Reticulum / ultrastructure
Epidermis / ultrastructure
Epithelium / ultrastructure
Golgi Apparatus / ultrastructure
Intercellular Junctions / ultrastructure
Lysosomes / ultrastructure
Mitochondria / ultrastructure
Organoids / ultrastructure
Pharynx / ultrastructure
Polychaeta / ultrastructure*

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