Cryptonephridic complex
WebIn the glow-worm the cryptonephric tubules themselves are small, and adjacent to the fat body the epithelial cells are modified to form very thin windows or 'leptophragmata' (Lison, 1937). The main epithelial cells exhibit features characteristic of highly active, secretory Malpighian tubule cells.
Cryptonephridic complex
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WebThe rectal complex of the mealworm is an example of the ‘cryptonephric’ condition, wherein the distal ends of the Malpighian tubules are closely applied to the rectum and enclosed with it in a special chamber, the perinephric space, which is separated from the rest of the body cavity by the perinephric membrane. WebFeb 1, 2000 · ABSTRACT. Extracts of the brain/corpora cardiaca/corpora allata (Br/CC/CA) complex of Manduca sexta larvae elicit an antidiuretic effect, measured by an increase in fluid reabsorption across the cryptonephric complex of larval M. sexta. Separation of the extract by reversed-phase liquid chromatography gave two fractions with antidiuretic …
WebIt appears that in this complex Mas-DH is acting on a Na+/K+/2Cl2 co-transporter, presumably on the basal membrane of the cryptonephric Malpighian tubules, because Mas-DH-stimulated fluid absorption by the cryptonephric complex is inhibited by bumetanide or the removal of Cl2, Na+or K+from the haemolymph side of the tissue. WebTransverse ampullae a membrane, thus forming a cryptonephric complex. with asperities are present dorsally and ventrally. A pair of Postcephalic glands (Fig. 8A). Structures resembling setae are inserted on their lateral edges. The lateral bulges glands with narrow and elongate cells are attached to the are distinct and bear two setae.
WebApr 24, 2009 · This species possesses a cryptonephridial complex in which the posterior end of the malpighian tubules is closely applied to the rectum and both are enclosed … WebThe cryptonephric Malpighian tubules within the rectal complex are bathed in fluid within a functional compartment, the perinephric space, which is separate from the haemolymph. In this study, the scanning ion-selective electrode technique (SIET) was used to measure transport of Na+ and K+ across the rectal complex and across multiple regions ...
WebThe Malpighian tubules and cryptonephric complex in lepidopteran larvae Dennis Kolosov, Michael J. O'Donnell, in Advances in Insect Physiology, 2024 5.1 Cation reabsorption via secondary cells facilitated by gap junctional coupling
WebThis is the first demonstration of hormonal control of fl uid absorption by the cryptonephric complex. 3. Concomitant with the stimulation of fluid transport, Mas-DH increases the … diane\u0027s flowers \u0026 giftsWebment described as 'cryptonephric' or 'cryptonephridial'* in which the distal, i.e. the blind, ends of the tubules are assembled and closely applied to the wall of the rectum and lie there in … diane\u0027s flowers and giftsWebInsect diuretic hormones are hormones that regulate water balance through diuretic action.. The insect excretory system, responsible for regulating water balance in the insect, comprises the Malpighian tubules and the hindgut (the ileum and rectum).Malpighian tubules secrete primary urine, most of which is passed into the hindgut where water, ions … diane\\u0027s flowers mount hawkeWebthenfallsexponentiallytoalowerequilibrium“rubbery”modulusE r asthepolymermolecules graduallyaccommodatethestrainbyconformationalextensionratherthanbonddistortion. cithare ebayWebknown as ‘cryptonephric complex’. This system facilitates the reabsorption of water and, therefore, is more highly developed in insects that feed on dry substances or live in a relatively dry environment and therefore need to retain water [4,7]. Notably in beetles that feed on dry substance, a special arrangement diane\u0027s flowers mount hawkeWebAug 13, 2024 · In the cryptonephric system of the mealworm, Tenebrio molitor (Coleoptera: Tenebrionidae), shown here, ions (principally potassium chloride, KCl) are transported into … diane\\u0027s florist headland alWebThe rectal or cryptonephric complex is a structure in which the terminal parts of the Malpighian tubules are closely associated with the rectum. It withdraws water from the rectal contents, thereby limiting fecal water loss, and is even capable of withdrawing water from unsaturated air. cithare definition