Descrição morfológica da glândula pineal de Alouatta belzebul
Nenhuma Miniatura disponível
Data
2021-03-04
Autores
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal de Goiás
Resumo
The pineal gland in vertebrates produces a hormone, a melatonin, which is related to
circadian control and other physiological behavioral functions, such as the reproductive
cycle, thermoregulation and thermal tolerance. The present study aimed to describe the
morphological, morphometric and histological aspects of the pineal of Alouatta belzebul.
Seven brains of adult specimens of this species were studied, of which the location of the
gland in relation to the surrounding brain structures was calculated and its length and width
were measured. Then, histological slides were prepared and stained with hematoxylin-eosin
and PAS. It was observed that the pineal of A. belzebul is located superiorly and cranially to
the cerebellum and superiorly to the superior colliculi and below the splenium of the corpus
callosum. In addition, it can be functional as subcalous. It had an average length of 2.6 mm
and an average width of 1.14 mm. Histologically, the gland is composed of irregular cords of
pinealocytes and gliocytes. Pinealocytes pair melanin-like pigments. It was concluded that a
pineal gland in Alouatta belzebul has similar aspects with some primates and carnivores,
mainly in the su
Descrição
Palavras-chave
Citação
MASCARENHAS, L. J. S. Descrição morfológica da glândula pineal de Alouatta belzebul. 2021. 82 f. Dissertação (Mestrado em Ciência Animal) - Universidade Federal de Goiás, Goiânia, 2021.