Abstract
An electron microscopical study has been carried out on the rectum of the tettigoniid Jamaicana flava. In this species, as in other terrestrial insects, the rectal epithelium is composed of a layer of small cells, thickened in six regions to form rectal pads. The columnar cells of the rectal pad are characterized by invaginations of the lateral and, to a lesser extent, the apical plasma membranes which produce a maze of interconnecting channels and spaces. The mitochondria of the cells are associated with the apical and lateral plasma membranes. A sub-epithelial sinus lies between the rectal epithelium and the surrounding layer of circular muscle. These ultrastructural features are discussed in relation to current models proposed to explain solute and water transport across the rectal wall.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
