Dados do Trabalho

Título

MORPHOMETRY AND VASCULARIZATION OF THE Macaca mulatta THYROID GLAND.

Resumo

The thyroid gland consists of two parts called lobes that are located on either side of the larynx. It is responsible for the production of hormones T3, T4 and calcitonin. The aim of this research is to characterize the measures and the vascularization of the thyroid gland in Macaca mulatta. The anatomical dissections were performed in ten cadaveric adult male rhesus that came from the Laboratory Animals Breeding Centre (Cecal/Fiocruz), and donated to the Animal Anatomy Department of UFRRJ. Through thoracic incision, their aortas were dissected and cannulated to wash their vascular systems with saline solution and to fix them with 10% formaldehyde. Immediately afterwards, their vascular systems were filled with coloured latex. They were kept in containers containing formaldehyde. The thyroid glands measurements were made with a digital caliper: length, width and thickness. Data expressed as mean and standard deviation. The vascularization of the thyroid gland was also determined. The thyroid gland length was 2.552 ± 0.341 in the right and 2.406 ± 0.299 in the left lobe.  The thyroid gland width was1.019 ± 0.137 in the right and 1.013 ± 0.087 in the left lobe. The thyroid gland thickness was 0.729 ± 0.137 in the right and 0.769 ± 0.083 in the left lobe. Information on the thyroid gland in primates is scarce, so the values obtained in rhesus were compared with other non-primate animals and man. No differences were observed in the measurements among the lobes similar to that observed in house musk shrew, rabbit, and humans. The arterial supply for both lobes of the thyroid gland originated from the cranial and caudal thyroid artery, similar to that observed in dog and humans. The results of the present study are expected to contribute to the body of knowledge in the field of comparative and applied anatomy.

Financiamento

FAPERJ, CNPq

Palavras-chave

Anatomy; morphometry; Rhesus.