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| Vieira, Lucélia Gonçalves; Universidade Federal de Uberlândia; Santos, André Luiz Quagliatto; Universidade Federal de Uberlândia; Lima, Fabiano Campos; Universidade Federal de Uberlândia. |
| In order to determine the normal stages of formation in the sequence of ossification of the cranium of Podocnemis expansa in its various stages of development, embryos were collected starting on the 18th day of natural incubation and were subjected to bone diaphanization and staining. In the neurocranium, the basisphenoid and basioccipital bones present ossification centers in stage 19, the supraoccipital and opisthotic in stage 20, the exoccipital in stage 21, and lastly the prooptic in stage 24. Dermatocranium: the squamosal, pterygoid and maxilla are the first elements to begin the ossification process, which occurs in stage 16. However, ossification centers begin to appear in stage 17 in most of these bone elements, i.e., the frontal, jugal,... |
| Tipo: Estudos embriológicos |
Palavras-chave: 2.06.04.02-5 Reptiles; Podocnemididae; Alizarin; Ossification Anatomia Animal Reptiles; Podocnemididae; Alizarin; Ossification. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5777 |
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| Henríquez,Ricardo; Olivares,Rossy; Caro,Gabriel; Guevara,Víctor; Lizana,Pablo. |
| Prenatal stress is associated with changes in body weight and size, and with disorders of the skeletal bone development process. However, there is a lack of documentation on the impact of prenatal stress on skull bone anatomy during the gestation period. Therefore, this research focuses on the short-term effects of prenatal stress on the skull bone anatomy of CF-1 mice on the day of birth. Methodology: Gestating females were divided at random into two groups (control and stressed). The experimental group was subjected to the stress of movement restriction during the final week of gestation. Upon birth the body weight of the progeny was evaluated (control group, n=34; stressed group, n=29). They were then cleaned and stained with alizarin red in order to... |
| Tipo: Journal article |
Palavras-chave: Prenatal stress; Membranous ossification; Alizarin; Skull bone; CF-1 mouse. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000300042 |
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