Regularities of morphogenesis of the coccygeosacral articulation in Anura

摘要

The regularities in the formation of different types of Anura coccygeosacral articulations have been determined. A review of factors that affect the form of this articulation is presented. It has been established that the determinant role in the formation of a moveable or immoveable articulation is played by the topography and time of the appearance of muscles in the coccygeosacral area. The proposed mechanisms explain not only the diversity of structural norms depending on this feature, but also options of individual variability.