Fine Structure of the Musculature of the Silkworm Larval Midgut

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概要

• 論文の詳細を見る

• The musculature of the larval midgut of the silkworm, Bombyx mori, is composed of outer set of longitudinal muscle fibers and inner set of circular muscle fibers. The circular muscle fibers are closely approximated and their plasma membranes are occasionally seen to be in close apposition. The muscle fibers are elongate uninucleate cells with a single myofibril in their sarcoplasm. The sarcomeres are divisible into A-, I-, H- and Z-bands. In the A-band region 12 thin myofilaments surround each thick myofilament. In fully contracted muscle fibers, the Z-band material is completely broken up into separate masses with spaces between them and there is an interdigitation of thick myofilaments from adjacent sarcomeres across these spaces. the sarcoplasmic reticulum frequently constitutes surface dyads with the plasma membrane but rarely associates with the transverse tubular system in the dyad configuration. The tracheal tissue appears to be the only cellular element that occurs in the interior of the musculature. Basal-granulated cells occur in the midgut epithelial layer.

• 日本応用動物昆虫学会の論文
• 1981-11-25

著者

• Kurihara Yutaka

  (present Address):faculty Of Agriculture University Of Tokyo

• Hukuhara Toshihiko

  Faculty Of Agriculture Tokyo University Of Agriculture And Technology

関連論文

• Development of Tipula Iridescent Virus in the Silkworm, Bombyx mori L. : (Lepidoptera : Bombycidae)
• Fine Structure of the Musculature of the Silkworm Larval Midgut

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