Nervous control of the mechanical properties of the abdominal wall at feeding in Rhodnius.

نویسنده

  • S H Maddrell
چکیده

Recent work has shown that the mechanical properties of insect cuticle can change suddenly (Cottrell, 1962; Bennet-Clark, 1962). In the larva of Rhodnius it was found that the abdominal endocuticle rapidly becomes extensible when the insect starts to feed (Bennet-Clark, 1962); the abdomen can then expand greatly to accommodate the large meal of blood. Bennet-Clark suggested that this plasticization of the cuticle is to be attributed to the appearance in the haemolymph of some factor absorbed from the blood meal through the gut wall. Cottrell (1962) showed that the process of expansion of the newly emerged adult CalUphora, which involved a similar increase in extensibility of certain parts of the cuticle, was under nervous control. Later work on Rhodnius has shown that the properties of the abdominal cuticle in this insect can also be affected by the nervous system (Maddrell, 1962; Nunez, 1963 a, b). This paper is an attempt to reconcile the various findings of work on Rhodnius and to describe more fully the way in which the mechanical properties of the abdominal cuticle are controlled in Rhodnius.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Study of Pulsatile Non-Newtonian Blood Flow Through Abdominal Aorta and Renal Arteries Incorporating Fluid- Structure Interaction

Background: The interaction between the blood and the vessel wall is of great clinical interest in studying cardiovascular diseases, the major causes of death in developed countries.Objective: To understand the effects of incorporating fluid-structure interaction into the simulation of blood flow through an anatomically realistic model of abdominal aorta and renal arteries reconstructed from CT...

متن کامل

Effects of Abdominal Massage on Feeding Tolerance in Preterm Infants Hospitalized in Selected Hospitals of Isfahan- Iran

 Background Feeding intolerance is one of the leading causes of weight loss in preterm infants. The present study aimed to evaluate the effects of abdominal massage on feeding tolerance in preterm infants hospitalized in neonatal intensive care units in Isfahan, Iran. Materials and Methods: In this randomized controlled clinical trial, 64 infants who had the inclusion criteria, were selected an...

متن کامل

Comparing the Effect of Non-nutritive Sucking and Abdominal Massage on Feeding Tolerance in Preterm Newborns

Background:Enteral feeding intolerance is a major problem in the preterm neonates. Non-nutritive sucking and abdominal massage are among the most important nutritional interventions in this regard. Aim: This study aimed to compare the effect of non-nutritive sucking and abdominal massage on feeding tolerance in the preterm newborns. Method: This clinical trial was conducted on 52 preterm neonat...

متن کامل

Pharmacological induction of plasticization in the abdominal cuticle of Rhodnius.

Injections of 5-hydroxytryptamine (5-HT, serotonin) are found to cause plasticization of the abdominal cuticle of Rhodnius larvae. This plasticization is a direct action of 5-HT on some element in the body wall; the central nervous system is not required. It is probable that 5-HT acts directly at a receptor on the epidermal cells. The relationship between structure and plasticizing activity for...

متن کامل

Efficacy of Polypropylene Mesh Coated with Bioresorbable Membrane (Sepramesh) for the Repair of Abdominal Wall Defects in Horses

Objective: The aim of this study was to compare the use of Polypropylene mesh (Prolene) and Sepramesh, a coated Polypropylene mesh with a protective layer of Seprafilm on its visceral side, for the repair of abdominal wall defects in horses. We also aimed to quantify the consequent visceral adhesion and tissue inflammatio Design: Experimental study. Animals: Ten horses. Methods: The horses w...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • The Journal of experimental biology

دوره 44 1  شماره 

صفحات  -

تاریخ انتشار 1966