The superficial layer of the Musculus masseter and the well-developed process of the maxilla in the tiger Panthera tigris

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抄録

The musculature and functional anatomy of the head and skull of a tiger <i>Panthera tigris</i> were, examined and compared with those of various other felid species. The <i>Musculus masseter</i> is divided into three layers. The superficial layer of which is well-developed and further sub-divided into lateral and medial components. The ventro-caudal fleshy portion of the lateral component originates behind the last upper molar, where it is attached by a strong tendon to the tubercle <i>tuber maxillae</i>. The medial component, which runs dorso-ventrally, has a particularly well-developed fleshy portion. The present anatomical study suggests that in the tiger, large masseteric forces are produced in both ventro-rostral and ventro-dorsal directions. In the tiger, a process is present on the tubercle of the maxilla from which the strong tendon originates. This process is also apparent in the leopard <i>Panthera pardus</i>, the jaguar <i>P. onca</i> and the puma <i>Felis concolor</i>. It is not found, however, in either the domestic cat <i>F. catus</i> or the Iriomote wild cat <i>F. iriomotensis</i>. Comparisons between the skulls of various species of felidae indicate that whereas the puma, the leopard and the jaguar each possess the strong tendon, which bundles the ventro-caudal fleshy portion of the lateral component, the domestic cat and the Iriomote wild cat only possess weak tendons attaching to this component.

収録刊行物

  • Mammal study = The Continuation of the Journal of the Mammalogical Society of Japan

    Mammal study = The Continuation of the Journal of the Mammalogical Society of Japan 25(1), 27-34, 2000-06-01

    日本哺乳類学会

参考文献:  37件中 1-37件 を表示

被引用文献:  3件中 1-3件 を表示

各種コード

  • NII論文ID(NAID)
    10013013202
  • NII書誌ID(NCID)
    AA11185060
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13434152
  • NDL 記事登録ID
    5442637
  • NDL 雑誌分類
    ZR4(科学技術--生物学--動物)
  • NDL 請求記号
    Z54-G149
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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