Structural cells identification in armadillo stomach: an opportunity to know about its digestion

This study presents the morphological characteristics of the stomach in E. sexcinctus focusing on the composition and distribution of gastric cells, relating the function of each region of the armadillo's stomach. Three stomachs of adults were used in this study. Each stomach was examined by macroscopy. Samples from various parts of the stomach were taken for routine histological examination. The stomach of E. sexcinctus is similar to the stomach of a carnivore, but it has macroscopic and microscopic characteristics that differentiate it from these. The stomach interposes between the esophagus and the small intestine occupying four abdominal regions, predominantly in the umbilical and left lateral regions. It is intensely pleated and composed of a glandular surface. The cells present in the gastric mucosa can be found in the three anatomical regions of the stomach: cardia, body and pylorus. However, they are statistically different within the regions of the stomach (p> 0.05). These data corroborate the concept that cells are distributed differently depending on the region of the stomach. Thus, studies on the physiology, eating habits and behavior of this animal in the ecosystem are still needed to provide knowledge that best elucidates gastric function and the relationship with its morphology.