Morfologia das glândulas parótidas dos Quatis

Abstract

Nasua nasua (coatis) are animals of daytime habit, widely found in Brazilian territory. These animals belong to the masked family as well as the naked hand. Its behavior is diurnal and its characteristic physical elements are the trumpet-shaped snout and the long tail used to maintain balance. For this work, 3 orthothanized animals were used, coming from the Scientific Creatory (CECRIMPAS) -UNIFEOB authorized by IBAMA as the Process: nº 02027.003731 / 04-76. The techniques used were latex injection into the abdominal aorta to replenish the arterial bed, followed by fixation in a 10% formaldehyde solution. The major salivary glands were identified, dissected, extracted, processed and prepared for observation under an optical microscope in the hematoxylin and eosin stains, toluidine blue, picrosirius and PAS and photocumented. Macroscopically, a pair of parotid glands can be seen located below the parotid-auricular muscle, ventral to the auricular cartilage and close to the mandibular gland. The parotid gland is attached to the auricular cartilage of coatis, measured 3.4 cm in cm in length, its width was 3.4 cm and thickness was 0.8 cm on average. This gland is multilobulated and was found to consist of serous acini, striated intralobular ducts, lined by simple prismatic epithelium, interlobular ducts that vary their epithelium from simple cubic to bi-stratified cubic and intercalated ducts lined by simple cubic epithelium.