THE OESOPHAGUS OF THE AFRICAN PALM SQUIRREL (EPIXERUS EBII): A MICRO ANATOMICAL OBSERVATION

  • IBE Ekele IKPEGBU Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria.
  • Samuel Chikera NLEBEDUM Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria.
  • Calistus Uchenna Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria.
  • Okechukwu NNADOZIE Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria.
Keywords: Histology, Myenteric plexus, African palm squirrel, Elastic fibres, Nigeria

Abstract

The oesophageal micromorphology of the rodent, African Palm Squirrel was investigated
to fill the dearth of information on the histology of this organ from available literature
and help in understanding its digestive tract biology. The organ after harvesting was
subjected to routine histological procedure for light microscopy. The organ microanatomy
was typical of the histology of mammalian tubular organ. The well-developed epithelium
was of stratified squamous cells. The laminar propria containing elastic tissue fibres was
apparently smaller than the large epithelium and muscularis mucosae. The muscularis
mucosae striated muscle was arranged longitudinally. The small submucosa contained
thin regular connective tissue. The tunica muscularis was made up of skeletal muscle
cells which were arranged in an inner circular and outer oblique orientation, with the
myenteric plexus located between these two muscle layers. The adventitia contained
blood vessels. The well-developed epithelium is an adaptation to rough and coarse feed it
consumes in the wild especially the fibrous coat of the oil palm fruit and other hard nuts.

Published
2019-02-14