LILIANA SOUSA1, ANA MARÍA PETRIELLA1,2
BIOCELL, Vol.30, No.2, pp. 287-294, 2006, DOI:10.32604/biocell.2006.30.287
Abstract This work describes the morphology and histology of the P. argentinus digestive tract. The foregut comprises the mouth, oesophagus, and stomach and is lined by a simple cylindrical epithelium overlain by cuticle. There are tegumental glands in the oral region and in the first portion of the oesophagus and of the hindgut. The cardiac stomach is an oval dorsal sac in the cephalothorax and has no calcified structures. The pyloric stomach comprises an upper chamber and a lower gland filter. The filter consists of an outer row of elongated setae and an inner row of dorsally curved setae forming longitudinal… More >
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