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ELECTRON MICROSCOPE OBSERVATIONS ON THE PHALLIC (CONGLOBATE) GLAND OF THE COCKROACH, PERIPLANETA AMERICANA
Author(s) -
Beams H. W.,
Anderson Everett,
Kessel Richard
Publication year - 1962
Publication title -
journal of the royal microscopical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0368-3974
DOI - 10.1111/j.1365-2818.1962.tb02074.x
Subject(s) - arthropod cuticle , periplaneta , anatomy , cuticle (hair) , biology , integument , cockroach , vesicle , electron microscope , ultrastructure , insect , optics , ecology , genetics , physics , membrane
SYNOPSIS The lumen of the phallic gland is lined by a layer of cuticle derived from an invagination of the integument. The same layers as found in the integument are represented in the cuticular lining; namely, epicuticle, exocuticle, and endocuticle with an underlying epidermal layer. In sections through the cuticle and the underlying gland cells, small ductules are seen to penetrate the cuticular layer and extend to the surface of the gland cells where they enter them and become continuous with small intra‐cellular ductules. Upon entering the gland cell a marked change in the structure of the ductule occurs. This consists in the termination of the relatively dense, continuous epicuticle as such and the appearance of a highly reticulated layer which extends throughout the remainder of the ductule. Abutting upon the reticulated layer are the microvilli. Small vesicles are often observed in the outer border of the cell. These may serve as a transport system. Mitochondria and relative large secretion bodies are frequently concentrated below and near the base of the microvilli. The Gogli material is present in the form of dictyosomes and the ergastoplasm as numerous rosettes, groups of small ribosomes or as vesicular elements.