Morphology of the Soft Palate Tonsil Mucosa of Collared Peccary (Pecari tajacu, Linnaeus, 1758)
Year: 2025
Type: article
Abstract: Collared Peccary (Pecari tajacu, Linnaeus, 1758) is a mammalian Tayassuidae species from tropical to semi-arid areas. The morphological features of the oral cavity in this species were identified and described. Tonsils are secondary lymphoid organs essential for contact with antigens due to food and air intake. This study aimed to describe histological characteristics and three-dimensional morphology of the soft palate tonsil mucosa. Therefore, the samples (n = 10) were analysed by stereomicroscope for morphology, light microscopy (n = 4) for structural characterisation, and scanning electron microscopy (n = 6) to reveal three-dimensional aspects of the epithelial surface and connective tissue cores (CTC). Our findings revealed a pair of soft palate tonsils separated by a median raphe. A keratinised squamous stratified epithelium characterised the tonsil. The epithelial surface had several orifices, and these were associated with a lymph nodule organisation. After epithelial removal, the three-dimensional aspect of the lamina propria was evidenced by conical projections throughout the region, even on the crypt's edge and inside them. The soft palate tonsils mucosa was like the previous description; however, the revealed CTC had a conical morphology, a new feature in this organ.
Source: Anatomia Histologia Embryologia
DOI: 10.1111/ahe.70016
Authors: André Neri Tomiate, Moacir Franco de Oliveira, José Roberto Rodrigues da Silva, Paula Oliveira Camargo, Adriano Polican Ciena
Language: English
Subfield: Urology
Field: Medicine
Domain: Health Sciences
Open Access status: bronze
OpenAlex ID: W4406287544