Anatomia macroscópica e microscópica da glândula pineal do macaco Cebus apella / Macroscopy and microscopic anatomy of the pineal gland of the monkey (Cebus apella)

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

The objective of this study is to describe the anatomical organization of the pineal gland of the Cebus apella monkey, analyzing its macrocospic and microscopical aspects, seen under the optics of the light microscopy, electronic microscopy of transmission and microanalysis by emission of X-Ray. In the development of this study 12 units of Cebus apella monkey, supplied by IBAMA ? MG, were used. For the macrocospic analysis we used 12 animals, which had been used for topography and related to pineal body related studies. From this group, seven specimens were used on the light microscopy, one specimen on electronic microscopy of transmission and one specimen on electronic microscopy of scanning. All the specimens were prepared according to histological techniques of routine. The pineal gland of the Cebus apella monkey presented itself as a small organ of variable forms and lengths, measuring 2,5mm to 4,0mm in length and 2,0mm to 3,5mm in width. It is caudally located to the esplenium of the calosus body, in relation to the pineal recess, being classified as subcalosus and type A according to Vollrath (1981). It is externally covered by a conjunctive tissue capsule, rich in collagen fibers, derived from the piamater. In the glandular parenchyma three types of cells are verified: pinealocytes, cells of the glia and mast cells. According to the morphologic characteristics of the cores, we identify pinealocytes of type I and pinealocytes of type II. Corpora arenaceae round and in morula shape are seen in the glandular parenchyma in which the microanalysis by emission of X-Ray showed two main components: the phosphorus and the aluminum

ASSUNTO(S)

cebus apella pineal gland neuroanatomy glândula pineal neuroanatomia cebus apella

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