Document Detail

Fine structure of the larval rhinophores of the nudibranch, Rostanga pulchra, with emphasis on the sensory receptor cells.
MedLine Citation:
PMID:  7105146     Owner:  NLM     Status:  MEDLINE    
The rhinophores of the veliger larva of Rostanga pulchra are located in the intravelar field near the base of the velar lobes. Each rhinophore is a cylindrical structure, tapering distally, and covered with a dense meshwork of microvilli. A conspicuous row of ciliary tufts runs along each side of the rhinophore and several stiffer tufts, composed of fewer cilia, are positioned around the tip or at the base. The rhinophoral epithelium consists of supporting cells, ciliated cells (giving rise to the ciliary rows), dendritic terminals (giving rise to the tufts around the apex), and sinuses containing occasional amebocytes. The lumen of the rhinophore is occupied by the rhinophoral ganglion and muscle cells that are oriented in two perpendicular planes. Cells bodies of the dendritic endings are located within the rhinophoral ganglion, which in turn joins into the optic and cerebral ganglia. Rhinophoral ganglionic neurons do not synapse with each other, but numerous neuromuscular synapses are found in the lumen of the rhinophore. Morphological evidence suggests that the dendritic endings are chemoreceptors and the ciliated cells are possibly mechanoreceptors but are not functional at this stage in development. The functional role of the rhinophores is discussed in relation to larval behavior at settlement and metamorphosis.
F S Chia; R Koss
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Cell and tissue research     Volume:  225     ISSN:  0302-766X     ISO Abbreviation:  Cell Tissue Res.     Publication Date:  1982  
Date Detail:
Created Date:  1982-10-29     Completed Date:  1982-10-29     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0417625     Medline TA:  Cell Tissue Res     Country:  GERMANY, WEST    
Other Details:
Languages:  eng     Pagination:  235-48     Citation Subset:  IM    
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MeSH Terms
Cell Membrane / ultrastructure
Cilia / ultrastructure
Cytoplasm / ultrastructure
Dendrites / ultrastructure
Epithelium / ultrastructure
Ganglia / ultrastructure
Microscopy, Electron
Mollusca / growth & development,  ultrastructure*
Muscles / ultrastructure
Organoids / ultrastructure
Sensory Receptor Cells / ultrastructure*
Synapses / ultrastructure

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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