The anatomical position of the animal was considered for descriptions of external morphology and visceral topography
in the coelomic cavity. For the study of the internal morphology, the digestive tube was removed, opened and immersed in tap water, and food particles were removed to facilitate observation. Then, macroscopic morphological descriptions were performed for each internal organ, observing the presence and shape of papillae, type and arrangement of mucosal folds, and presence of sphincters. A flexible line was placed along each organ (esophagus, stomach, small intestine and large intestine) and then placed over a measuring tape to determine the length. Photographic images were taken to support the descriptions.
The anatomical position of the animal was considered for descriptions of external morphology and visceral topographyin the coelomic cavity. For the study of the internal morphology, the digestive tube was removed, opened and immersed in tap water, and food particles were removed to facilitate observation. Then, macroscopic morphological descriptions were performed for each internal organ, observing the presence and shape of papillae, type and arrangement of mucosal folds, and presence of sphincters. A flexible line was placed along each organ (esophagus, stomach, small intestine and large intestine) and then placed over a measuring tape to determine the length. Photographic images were taken to support the descriptions.
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