Histological observations of stomach in different mammals

Introduction: Despite striking advances have been made in the technology of microscope to elucidate the ultra structure of various body tissues, yet the exact histology picture of stomach remained an enigma for different research workers engaged in the field, all over the world to resolve the issues. Although the wall of the stomach consists of four usual layers, Serous, muscular, submucous and mucous together with various types of glands, vessels and nerves; but it is oversimplification of the complex subject.
Material and Methods: The aim of the present work is to study the histological variations in the stomach of some mammals, include in this series of study. The stomach of different species have been chosen for the study, which are commonly available i.e. human, albino rat, guinea pig, rabbit, goat etc. The tissues were kept for histological examination in 10% formal saline solution. Paraffin- blocks were prepared. These block specimen were cut a thickness of about 5 microns and now usual Haematoxylin and Eosin staining were performed on albuminised slides.
Observations: A true glandular stomach is present only in carnivores; all other domestic mammals possess non glandular organs of various kinds.
Summary And Conclusion: A critical study of the histology aspects of stomach in some mammals was done. It was also tried to study the evolutionary changes in stomach with respect to the development of animals in the phylogenetic scale. In addition to the above, a brief study its microscopic features were also studied.