A histo-morphometric study on the developing gastrointestinal tract of the axolotl, Ambystoma mexicanum

JOURNAL OF ADVANCES IN BIOLOGY

View Publication Info
 
 
Field Value
 
Title A histo-morphometric study on the developing gastrointestinal tract of the axolotl, Ambystoma mexicanum
 
Creator Badawy, Gamal M.
 
Subject Anatomy;Histology;Embryonic development;Gastrointestinal tract;Ambystoma mexicanum
 
Description The histological structure of the developing gastrointestinal tract (GIT) of the axolotl, Ambystoma mexicanum, was investigated during embryonic, larval and juvenile stages. The earliest histological events witnessed the formation of the archenteron as a more or less circular shaped cavity at stage 13. Concurrent with the first significant elongation of the embryo, the gut was evidently subdivided into foregut, midgut and hindgut at stage 16 after which there was a progressive but slow differentiation up to stage 37. Very active cellular movements occurred and resulted in the anatomical differentiation of the stomach at stage 40. During the endogenous feeding phase, two prominent features characterized the histological structure of the developing GIT. Firstly, the endodermal yolk mass resorption which occurred in a proximodistal (PD) direction and lasted up to six days after hatching. Secondly, the progressive PD cellular differentiation during which both the endodermal and mesodermal components showed a co-ordinated and concomitant histological differentiation towards the establishment of the gastrointestinal wall. Subsequent stages displayed active cellular proliferation accompanied with progressive histogenesis, which eventually led to a well-developed GIT in the 2.5 cm long larvae. The histological structure of the mature GIT is described and illustrated. Furthermore, certain morphometric parameters were measured during development.
 
Publisher CIRWORLD
 
Date 2017-01-10
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://cirworld.com/index.php/jab/article/view/5466
 
Source JOURNAL OF ADVANCES IN BIOLOGY; Vol 6 No 1; 848-860
2347-6893
 
Language eng
 
Relation http://cirworld.com/index.php/jab/article/view/5466/5279
 
Rights Copyright (c) 2017 JOURNAL OF ADVANCES IN BIOLOGY
http://creativecommons.org/licenses/by/4.0
 

Contact Us

The PKP Index is an initiative of the Public Knowledge Project.

For PKP Publishing Services please use the PKP|PS contact form.

For support with PKP software we encourage users to consult our wiki for documentation and search our support forums.

For any other correspondence feel free to contact us using the PKP contact form.

Find Us

Twitter

Copyright © 2015-2018 Simon Fraser University Library