| The Microvascular Anatomy of the Trachea in Adult Xenopus laevis Daudin (Lissamphibia; Anura): Scanning Electron Microscopy of Vascular Corrosion Casts and Correlative Light Microscopy. | |
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MedLine Citation:
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PMID: 22539457 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Studies on the amphibian respiratory tract microvascular anatomy are few and contradictory. Using scanning electron microscopy of vascular corrosion casts, correlative light microscopy of paraplast-embedded Goldner-stained serial tissue sections, and three-dimensional morphometry, we studied the topographic microvascular anatomy in the trachea of the adult South African Clawed Toad, Xenopus laevis Daudin. Histomorphology showed that the cartilaginous portion of the trachea contained irregularly shaped hyaline cartilage plates in its cranial and caudal portions and C-shaped hyaline cartilage rings in the middle portion. Tracheal cartilages formed large continuous plates on the ventral circumference, numerous small discontinuous plates on the dorsal circumference, and large vertical plates on the caudolateral circumference. The muscular portion of the trachea consisted of bands of smooth muscle that joined the free ends of cartilage plates. The supply of the trachea was via pulmonal artery-tracheobronchial trunk artery-tracheobronchial artery-tracheal artery. The subepithelial capillary network consisted of rectangular meshes which are in the area of the tracheal cartilages located between the cartilages and the respiratory epithelium. Small tracheal veins merged into a single tracheal vein that emptied into the pulmonary vein. Because of its dense subepithelial capillary network and its drainage into the pulmonal vein, the trachea could actively take part in respiration. Anat Rec, 2012. © 2012 Wiley Periodicals, Inc. |
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Authors:
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Wasan Tangphokhanon; Alois Lametschwandtner |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-4-27 |
Journal Detail:
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Title: Anatomical record (Hoboken, N.J. : 2007) Volume: - ISSN: 1932-8494 ISO Abbreviation: - Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-4-27 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101292775 Medline TA: Anat Rec (Hoboken) Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2012 Wiley Periodicals, Inc. |
Affiliation:
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Department of Veterinary Biosciences and Public Health, Faculty of Veterinary Medicine, Chiang Mai University, Mae Hia, Muang, Chiang Mai, Thailand. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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