| Morphological and physiological factors involved in the contractility of the spermatic cord and ductus deferens of the opossum (Didelphis albiventris). | |
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MedLine Citation:
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PMID: 7097636 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The opossum spermatic cord is characterized by a thick skeletal muscle coat, provided by the great development of the cremasteric muscle. Acetylcholine induced a powerful contraction of the spermatic cord placed in an organ bath containing Heller's solution. This contraction was blocked by curare but not completely by atropine as is usual for skeletal muscle. However, the ductus deferens did not respond to acetylcholine or catecholamines under the same conditions. Specific histochemical methods for both catecholamines and acetylcholinesterases revealed that the ductus deferens musculature, composed mainly of circular fibres, is richly innervated by adrenergic and presumed cholinergic nerve fibres. The lack of responsiveness to the neurotransmitters could be explained by the absence of longitudinally arranged muscle. It is suggested that in the opossum the cremaster could participate in the mechanism of sperm transport. |
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Authors:
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C R Machado; S L Calixto; W Ladosky |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of reproduction and fertility Volume: 65 ISSN: 0022-4251 ISO Abbreviation: J. Reprod. Fertil. Publication Date: 1982 Jul |
Date Detail:
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Created Date: 1982-09-17 Completed Date: 1982-09-17 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0376367 Medline TA: J Reprod Fertil Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 275-80 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acetylcholine
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pharmacology Animals Atropine / pharmacology Curare / pharmacology Male Muscle Contraction Opossums / physiology* Spermatic Cord / drug effects, physiology* Vas Deferens / drug effects, physiology* |
| Chemical | |
Reg. No./Substance:
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51-55-8/Atropine; 51-84-3/Acetylcholine; 8063-06-7/Curare |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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