Lưới tận

Lưới tận (tiếng Anh: terminal web) là hệ thống lưới có trong bào tương phần ngọn của nhiều tế bào biểu mô.[1] Lưới tận được cấu tạo chủ yếu từ các sợi actin được bền hóa bởi spectrin có chức năng gắn kết lưới tận vào phần ngọn bào tương. Sự hiện diện của myosin IItropomyosin đã giải thích khả năng co bóp của lưới tận. Khi co lại, lưới tận làm giảm đường kính bào tương phần ngọn, khiến vi nhung mao vốn được neo vào lưới tận thông qua các sợi actin, lan rộng ra. Sự lan rộng của vi nhung mao giúp tế bào hấp thu chất.[2][3][4][5]

Tham khảo

  1. ^ Trịnh Bình 2007, tr. 25.
  2. ^ Hirokawa N, Tilney LG, Fujiwara K, Heuser JE (1982). “Organization of actin, myosin, and intermediate filaments in the brush border of intestinal epithelial cells”. J Cell Biol. 94 (2): 425–43. doi:10.1083/jcb.94.2.425. PMC 2112874. PMID 7202010.
  3. ^ Keller TC 3rd, Mooseker MS (1982). “Ca++-calmodulin-dependent phosphorylation of myosin, and its role in brush border contraction in vitro”. J Cell Biol. 95 (3): 943–59. doi:10.1083/jcb.95.3.943. PMC 2112925. PMID 6897550. link
  4. ^ Keller TC 3rd, Conzelman KA, Chasan R, Mooseker MS (1985). “Role of myosin in terminal web contraction in isolated intestinal epithelial brush borders”. J Cell Biol. 100 (5): 1647–55. doi:10.1083/jcb.100.5.1647. PMC 2113869. PMID 3988804. link
  5. ^ Ross, Michael H., and Wojciech Pawlina. "Chapter 5: Epithelial Tissue." Histology: a Text and Atlas: with Correlated Cell and Molecular Biology. Philadelphia: Wolters Kluwer/Lippincott Williams & Wilkins Health, 2011. 110. Print.
Sách
  • GSTS. BS. Trịnh Bình (2007). Mô - phôi (Phần mô học). Nhà xuất bản Y học. tr. 25. Chú thích có tham số trống không rõ: |1= (trợ giúp)

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