[Tegumentary glands of the supra-anal pit of Scutigerellidae (Symphala, Myriapoda)].
Tegumentary glands of the 'supra-anal pit' in the genus Scutigerella are ductule-associated glandular cells. The invaginated cavity consists of two distinct parts, the inner bearing microvilli collector. The efferent ductule penetrates into the upper part of the cavity by means of a receiving tubule, the wall of which is perforated and composed of two layers having different electron densities. The glandular cell cytoplasm is packed with smooth endoplasmic reticulum which arises from rough endoplasmic reticulum and by blebbing of the outer membrane of the nuclear envelope, blebs immediately losing their ribosomes. Secretion granules are released into the extracellular invaginated cavity between the microvilli and form an amorphous layer that covers the cuticular invagination of the 'supra-anal pit'.
D000818:Animals; D001181:Arthropods / Q000033:anatomy & histology / Q000648:ultrastructure*; D003593:Cytoplasm / Q000648:ultrastructure; D004721:Endoplasmic Reticulum / Q000648:ultrastructure; D005088:Exocrine Glands / Q000033:anatomy & histology / Q000378:metabolism / Q000648:ultrastructure*; D012867:Skin / Q000648:ultrastructure
Les glandes tegumentaires de la fossette supra-anale des Scutigerellidae (Symphala, Myriapoda)