Morphology and biometry of the thymus in ostrich (Sthruthio camelus)
Cheston Cesar Honorato Pereira,
Márcia Rita Fernandes Machado,
Angelita das Graças de Oliveira Honorato,
Bruno Gomes Vasconcelos,
Tales Dias do Prado
Affiliations
Cheston Cesar Honorato Pereira
Universidade de Rio Verde.
End.: Fazenda Fontes do Saber - Caixa Postal 104 - CEP: 75.901-970
75901-970 - Rio Verde, GO - Brasil
Telefone: (64) 36202200
Fax: (64) 36202201
Márcia Rita Fernandes Machado
Livre Docência na Faculdade de Ciências Agrárias e Veterinárias, Câmpus de Jaboticabal
Angelita das Graças de Oliveira Honorato
Doutoranda do programa de pós-graduação em ciências Veterinárias da Universidade Federal de Uberlândia.
Bruno Gomes Vasconcelos
Professor Assistente A da Universidade Federal do Mato Grosso (UFMT), Campus de Sinop
Tales Dias do Prado
Professor assistente I da Universidade de Rio Verde
This work studied the anatomy of the thymus in 30 young ostriches (13 males and 17 females, 10 to 20 days old) that were fixed in an aqueous solution of 10% formaldehyde. Chains of thymic lobes, arranged linearly and parallel, were located in the third distal part of the ventral region of the neck from the eleventh to the fifteenth cervical vertebra, which relates to the vagus nerve and jugular vein. The number of lobes varied from 1 to 3 and 1 to 2 in the right and left antimeres, respectively. In the right antimere, the average dimensions of the lobes were 2.09 × 0.71 × 0.41 cm for the cranial lobe, 0.69 × 0.38 × 0.27 cm for the middle lobe and 55 × 0.33 × 0.29 cm for the caudal lobe. In the left antimere, the average dimensions were 2.14 × 0.71 × 0.37 cm for the cranial lobe and 0.60 × 0.31 × 0.22 cm for the caudal lobe. The morphology and thymus biometrics showed well-defined traits, having common attributes, such as holotopy, skelotopy, syntopy and idiotopy, which characterized the species of this study.
