Observations Concerning the Structure of the Major Salivary Glands in Chinchilla (Chinchilla lanigera)

Abstract

The structure of the salivary glands is different depending on the species and diet. The glandular secretion can be serous, mucous or mixed. Within the same order, for instance in rodents, there are dissimilarities between the major salivary glands, even if the diet is similar.In this study, we used three chinchillas, slaughtered for their fur. We harvested the major salivary glands which were histologically processed.The parotid gland in chinchilla is highly similar to the one in other mammal species, regarding its general microscopic aspect. It contains only one type of acini (serous) and numerous secretory ducts. On the other hand, the submaxillary gland has a particular type of acini, with a narrow lumen and cells with a round nucleus. They resemble the serous ones, but the glanular aspect of the cytoplasm suggests that the secretion of this gland is different in comparison to the one in the parotid gland. The structure of the sublingual gland in chinchilla is similar to the one in most of the mammals, containing typical mucous acini, with a foamy cytoplasm.The major salivary glands in chinchilla highly resemble those in most of the mammal species. The parotid gland presents serous acini and the sublingual one, typical mixed acini. Instead, the submaxillary gland has a particular aspect: its acini do not present the serous demilune, they resemble the typical serous acini (contain round nuclei), but they are larger.

Observations regarding the structure of the parotid and mandibular glands in rabbit

“…Both glands contain serous acini. Likewise, we found (in previous studies) that this aspect is also seen in chinchilla ( (Matosz et al, 2016).…”

Histological structure and evaluation of cellular layers of Large intestine in Guinea pig (Cavia porcellus)

“…The digestive tract in the species Cavia Purcell us, about the structure of pre diaphragmatic digestive segments [1] and the structure of the small intestine [2] . Another topic quite often addressed in the case of guinea pigs is represented by the adnexal glands of the digestive tract [3] As for the caecum, it is described in the literature as the first segment of the large intestine, which makes the connection between the ileum and the ascending colon [4,5,6] the guinea pig was classified as a species at the end of the 17th century and is due to a naturalist named Johann Polycarp Erxleben. The guinea pig is part of the Animalia Kingdom, Cordata, Mammalia Class, Rodentia Order, Hystricomorphic Suborder, Caviidae Family, Caviinae Subfamily, Cavia Genus [7] .…”

Macroscopic Aspects of the Cranial Mesenteric Artery (Arteria Mesenterica Cranialis) in Chinchilla Lanigera Species

“…Others results focus on histological structure of arteries while others the approach the histological structure of major salivary glands (Matosz et al, 2016).…”