Microvasculature in the Terminal Air Spaces of the Lungs of the Baird's Beaked Whale (Berardius bairdii)

• NINOMIYA Hiroyoshi

  Department of Laboratory Animal Science, Azabu University

• INOMATA Tomo

  Department of Laboratory Animal Science, Azabu University

• SHIROUZU Hiroshi

  Taiji Whale Museum

抄録

Lungs were obtained from five adult Baird's beaked whales (Berardius bairdii) and examined by means of light microscopy and scanning electron microscopy of corrosion casts. The alveolar septa of these whales are thick with a connective tissue core and a bi-layer capillary bed. A double capillary network is regularly found in the alveolar duct and alveolar septa. Occasionally, septa adjacent to alveoli and alveoli themselves show only a single capillary layer. The distance between the two capillary layers has a tendency to decrease toward the end of airspaces, suggesting an end result of capillary fusion. Vascular replicas of venous vessels have annular furrows at regular intervals of 50 to 100 μm, which are caused by focal aggregations of collagen fibers circularly oriented and located immediately underneath the endothelium. The first valves appear in the collecting venules gathering alveolar capillaries. These valves are quite characteristic of flap-, funnel-and/or chimney like structures.<br>

収録刊行物

• Ｔｈｅ　Ｊｏｕｒｎａｌ　ｏｆ　Ｖｅｔｅｒｉｎａｒｙ　Ｍｅｄｉｃａｌ　Ｓｃｉｅｎｃｅ

  Ｔｈｅ　Ｊｏｕｒｎａｌ　ｏｆ　Ｖｅｔｅｒｉｎａｒｙ　Ｍｅｄｉｃａｌ　Ｓｃｉｅｎｃｅ 66 (12), 1491-1495, 2004

  公益社団法人 日本獣医学会

キーワード

• alveolar capillaries
• Baird's whale
• corrosion cast
• lung
• venous valves

詳細情報

• CRID: 1390282681401441280
• NII論文ID: 110003963639
• NII書誌ID: AA10796138
• DOI: 10.1292/jvms.66..1491
• ISSN: 13477439
• ISSN: 09167250
• NDL書誌ID: 7194704
• PubMed: 15644597
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7194704
• Web Site: http://www.jstage.jst.go.jp/article/jvms/66/12/66_12_1491/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • PubMed
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可