Morphology and Innervation Pattern of the Feline Urogenital Junction
Identifieur interne : 001686 ( Istex/Corpus ); précédent : 001685; suivant : 001687Morphology and Innervation Pattern of the Feline Urogenital Junction
Auteurs : K. H. Wrobel ; A. GürtlerSource :
- Anatomia, Histologia, Embryologia [ 0340-2096 ] ; 2004-12.
Abstract
The feline urogenital junction is situated between the extratesticular rete and the spacious initial segments of the efferent ductules. The rete epithelium is cuboidal to low columnar. The rete cells forming the junction rest on a wavy basal lamina, display deep mutual invaginations, possess central nuclei with several infoldings and form a distinct border with the columnar epithelial cells of the initial segments of the ductuli efferentes. The epithelium of the initial segments is composed of ciliated cells and non‐ciliated principal cells. The latter are the dominating type and characterized by an apical brush‐border and a supranuclear endocytotic apparatus. The stroma of the extratesticular rete contains an abundance of collagen whereas contractile cells are here generally absent. In contrast, the initial segments of the efferent ductules are surrounded by elastic fibres and a layer of contractile cells. All nerves for the feline urogenital junction come from the nervus spermaticus superior. In the epididymal head, small nerve bundles deviate into the septa between the ductules. Single fibres establish a dense network within the muscular coat of the ductuli. At the transition to the extratesticular rete, this network ends abruptly. Nerve fibres in the confines of the rete are associated with blood vessels or proceed to the testicular interior, but establish no relationships with the rete epithelium or the myofibroblasts of the mediastinum. The nervous network in the walls of the efferent ductules and their initial segments is not only composed of sympathetic but also parasympathetic, non‐myelinated fibres. Particularly noteworthy is the abundance of calcitonin gene‐related peptide (CGRP)‐ and substance P (SP)‐containing axons around the initial segments. Both neuroproteins are consistent markers for sensory neurones. Taken together, it can be assumed that the entry of seminal fluid and spermatozoa into the efferent ductules is controlled by a regulatory nervous chain provided with afferent and efferent components.
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DOI: 10.1111/j.1439-0264.2004.00564.x
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The rete epithelium is cuboidal to low columnar. The rete cells forming the junction rest on a wavy basal lamina, display deep mutual invaginations, possess central nuclei with several infoldings and form a distinct border with the columnar epithelial cells of the initial segments of the ductuli efferentes. The epithelium of the initial segments is composed of ciliated cells and non‐ciliated principal cells. The latter are the dominating type and characterized by an apical brush‐border and a supranuclear endocytotic apparatus. The stroma of the extratesticular rete contains an abundance of collagen whereas contractile cells are here generally absent. In contrast, the initial segments of the efferent ductules are surrounded by elastic fibres and a layer of contractile cells. All nerves for the feline urogenital junction come from the nervus spermaticus superior. In the epididymal head, small nerve bundles deviate into the septa between the ductules. Single fibres establish a dense network within the muscular coat of the ductuli. At the transition to the extratesticular rete, this network ends abruptly. Nerve fibres in the confines of the rete are associated with blood vessels or proceed to the testicular interior, but establish no relationships with the rete epithelium or the myofibroblasts of the mediastinum. The nervous network in the walls of the efferent ductules and their initial segments is not only composed of sympathetic but also parasympathetic, non‐myelinated fibres. Particularly noteworthy is the abundance of calcitonin gene‐related peptide (CGRP)‐ and substance P (SP)‐containing axons around the initial segments. Both neuroproteins are consistent markers for sensory neurones. Taken together, it can be assumed that the entry of seminal fluid and spermatozoa into the efferent ductules is controlled by a regulatory nervous chain provided with afferent and efferent components.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>K. H. Wrobel</name><affiliations><json:string>Address of authors: Institute of Anatomy, University of Regensburg, Universitätsstr. 31 93040 Regensburg, Germany; *Corresponding author: Tel.: +49 941 943 2839; fax: +49 941 943 2840; e‐mail: karl‐heinz.wrobel@vkl.uni‐regensburg.de</json:string></affiliations></json:item><json:item><name>A. Gürtler</name><affiliations><json:string>Address of authors: Institute of Anatomy, University of Regensburg, Universitätsstr. 31 93040 Regensburg, Germany; *Corresponding author: Tel.: +49 941 943 2839; fax: +49 941 943 2840; e‐mail: karl‐heinz.wrobel@vkl.uni‐regensburg.de</json:string></affiliations></json:item></author><articleId><json:string>AHE564</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>The feline urogenital junction is situated between the extratesticular rete and the spacious initial segments of the efferent ductules. The rete epithelium is cuboidal to low columnar. The rete cells forming the junction rest on a wavy basal lamina, display deep mutual invaginations, possess central nuclei with several infoldings and form a distinct border with the columnar epithelial cells of the initial segments of the ductuli efferentes. The epithelium of the initial segments is composed of ciliated cells and non‐ciliated principal cells. The latter are the dominating type and characterized by an apical brush‐border and a supranuclear endocytotic apparatus. The stroma of the extratesticular rete contains an abundance of collagen whereas contractile cells are here generally absent. In contrast, the initial segments of the efferent ductules are surrounded by elastic fibres and a layer of contractile cells. All nerves for the feline urogenital junction come from the nervus spermaticus superior. In the epididymal head, small nerve bundles deviate into the septa between the ductules. Single fibres establish a dense network within the muscular coat of the ductuli. At the transition to the extratesticular rete, this network ends abruptly. Nerve fibres in the confines of the rete are associated with blood vessels or proceed to the testicular interior, but establish no relationships with the rete epithelium or the myofibroblasts of the mediastinum. The nervous network in the walls of the efferent ductules and their initial segments is not only composed of sympathetic but also parasympathetic, non‐myelinated fibres. Particularly noteworthy is the abundance of calcitonin gene‐related peptide (CGRP)‐ and substance P (SP)‐containing axons around the initial segments. Both neuroproteins are consistent markers for sensory neurones. 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The rete epithelium is cuboidal to low columnar. The rete cells forming the junction rest on a wavy basal lamina, display deep mutual invaginations, possess central nuclei with several infoldings and form a distinct border with the columnar epithelial cells of the initial segments of the ductuli efferentes. The epithelium of the initial segments is composed of ciliated cells and non‐ciliated principal cells. The latter are the dominating type and characterized by an apical brush‐border and a supranuclear endocytotic apparatus. The stroma of the extratesticular rete contains an abundance of collagen whereas contractile cells are here generally absent. In contrast, the initial segments of the efferent ductules are surrounded by elastic fibres and a layer of contractile cells. All nerves for the feline urogenital junction come from the nervus spermaticus superior. In the epididymal head, small nerve bundles deviate into the septa between the ductules. Single fibres establish a dense network within the muscular coat of the ductuli. At the transition to the extratesticular rete, this network ends abruptly. Nerve fibres in the confines of the rete are associated with blood vessels or proceed to the testicular interior, but establish no relationships with the rete epithelium or the myofibroblasts of the mediastinum. The nervous network in the walls of the efferent ductules and their initial segments is not only composed of sympathetic but also parasympathetic, non‐myelinated fibres. Particularly noteworthy is the abundance of calcitonin gene‐related peptide (CGRP)‐ and substance P (SP)‐containing axons around the initial segments. Both neuroproteins are consistent markers for sensory neurones. 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H. W<sc>robel</sc> and A. G<sc>ürtler</sc></title><title type="short">The Feline Urogenital Junction</title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#aff-1-1"><personName><givenNames>K. H.</givenNames><familyName>Wrobel</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#aff-1-1"><personName><givenNames>A.</givenNames><familyName>Gürtler</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="aff-1-1" countryCode="DE"><unparsedAffiliation>Address of authors: Institute of Anatomy, University of Regensburg, Universitätsstr. 31 93040 Regensburg, Germany; *Corresponding author: Tel.: +49 941 943 2839; fax: +49 941 943 2840; e‐mail: <email normalForm="karl-heinz.wrobel@vkl.uni-regensburg.de">karl‐heinz.wrobel@vkl.uni‐regensburg.de</email></unparsedAffiliation></affiliation></affiliationGroup><abstractGroup><abstract type="main" xml:lang="en"><title type="main">Summary</title><p>The feline urogenital junction is situated between the extratesticular rete and the spacious initial segments of the efferent ductules. The rete epithelium is cuboidal to low columnar. The rete cells forming the junction rest on a wavy basal lamina, display deep mutual invaginations, possess central nuclei with several infoldings and form a distinct border with the columnar epithelial cells of the initial segments of the ductuli efferentes. The epithelium of the initial segments is composed of ciliated cells and non‐ciliated principal cells. The latter are the dominating type and characterized by an apical brush‐border and a supranuclear endocytotic apparatus. The stroma of the extratesticular rete contains an abundance of collagen whereas contractile cells are here generally absent. In contrast, the initial segments of the efferent ductules are surrounded by elastic fibres and a layer of contractile cells. All nerves for the feline urogenital junction come from the nervus spermaticus superior. In the epididymal head, small nerve bundles deviate into the septa between the ductules. Single fibres establish a dense network within the muscular coat of the ductuli. At the transition to the extratesticular rete, this network ends abruptly. Nerve fibres in the confines of the rete are associated with blood vessels or proceed to the testicular interior, but establish no relationships with the rete epithelium or the myofibroblasts of the mediastinum. The nervous network in the walls of the efferent ductules and their initial segments is not only composed of sympathetic but also parasympathetic, non‐myelinated fibres. Particularly noteworthy is the abundance of calcitonin gene‐related peptide (CGRP)‐ and substance P (SP)‐containing axons around the initial segments. Both neuroproteins are consistent markers for sensory neurones. Taken together, it can be assumed that the entry of seminal fluid and spermatozoa into the efferent ductules is controlled by a regulatory nervous chain provided with afferent and efferent components.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Morphology and Innervation Pattern of the Feline Urogenital Junction</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>The Feline Urogenital Junction</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Morphology and Innervation Pattern of the Feline Urogenital Junction</title></titleInfo><name type="personal"><namePart type="given">K. H.</namePart><namePart type="family">Wrobel</namePart><affiliation>Address of authors: Institute of Anatomy, University of Regensburg, Universitätsstr. 31 93040 Regensburg, Germany; *Corresponding author: Tel.: +49 941 943 2839; fax: +49 941 943 2840; e‐mail: karl‐heinz.wrobel@vkl.uni‐regensburg.de</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">A.</namePart><namePart type="family">Gürtler</namePart><affiliation>Address of authors: Institute of Anatomy, University of Regensburg, Universitätsstr. 31 93040 Regensburg, Germany; *Corresponding author: Tel.: +49 941 943 2839; fax: +49 941 943 2840; e‐mail: karl‐heinz.wrobel@vkl.uni‐regensburg.de</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Verlag GmbH</publisher><place><placeTerm type="text">Berlin, Germany</placeTerm></place><dateIssued encoding="w3cdtf">2004-12</dateIssued><edition>Received March 2004; accepted for publication March 2004</edition><copyrightDate encoding="w3cdtf">2004</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="figures">15</extent></physicalDescription><abstract lang="en">The feline urogenital junction is situated between the extratesticular rete and the spacious initial segments of the efferent ductules. The rete epithelium is cuboidal to low columnar. The rete cells forming the junction rest on a wavy basal lamina, display deep mutual invaginations, possess central nuclei with several infoldings and form a distinct border with the columnar epithelial cells of the initial segments of the ductuli efferentes. The epithelium of the initial segments is composed of ciliated cells and non‐ciliated principal cells. The latter are the dominating type and characterized by an apical brush‐border and a supranuclear endocytotic apparatus. The stroma of the extratesticular rete contains an abundance of collagen whereas contractile cells are here generally absent. In contrast, the initial segments of the efferent ductules are surrounded by elastic fibres and a layer of contractile cells. All nerves for the feline urogenital junction come from the nervus spermaticus superior. In the epididymal head, small nerve bundles deviate into the septa between the ductules. Single fibres establish a dense network within the muscular coat of the ductuli. At the transition to the extratesticular rete, this network ends abruptly. Nerve fibres in the confines of the rete are associated with blood vessels or proceed to the testicular interior, but establish no relationships with the rete epithelium or the myofibroblasts of the mediastinum. The nervous network in the walls of the efferent ductules and their initial segments is not only composed of sympathetic but also parasympathetic, non‐myelinated fibres. Particularly noteworthy is the abundance of calcitonin gene‐related peptide (CGRP)‐ and substance P (SP)‐containing axons around the initial segments. Both neuroproteins are consistent markers for sensory neurones. Taken together, it can be assumed that the entry of seminal fluid and spermatozoa into the efferent ductules is controlled by a regulatory nervous chain provided with afferent and efferent components.</abstract><relatedItem type="host"><titleInfo><title>Anatomia, Histologia, Embryologia</title></titleInfo><genre type="journal">journal</genre><identifier type="ISSN">0340-2096</identifier><identifier type="eISSN">1439-0264</identifier><identifier type="DOI">10.1111/(ISSN)1439-0264</identifier><identifier type="PublisherID">AHE</identifier><part><date>2004</date><detail type="volume"><caption>vol.</caption><number>33</number></detail><detail type="issue"><caption>no.</caption><number>6</number></detail><extent unit="pages"><start>317</start><end>325</end><total>9</total></extent></part></relatedItem><identifier type="istex">01E3C432C8BFC7570883448A011AF102AF072D8E</identifier><identifier type="DOI">10.1111/j.1439-0264.2004.00564.x</identifier><identifier type="ArticleID">AHE564</identifier><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Blackwell Verlag GmbH</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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|texte= Morphology and Innervation Pattern of the Feline Urogenital Junction
}}
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