urostyle

/yoor-uh-stahyl/US // ˈyʊər əˌstaɪl //UK // (ˈjʊərəʊˌstaɪl) //

风格,风格的

Definitions

n.名词 noun

1
Anatomy.
- : the fused vertebrae at the posterior end of the spinal column of some fishes and tailless amphibians.

The post-sacral part of the spinal column ossifies continuously, forming an unsegmented cylindrical rod, the urostyle.
The urostyle is a long rod-like bone forming the posterior unsegmented continuation of the vertebral column.
In Anura the number of vertebrae is very greatly reduced, only nine and the urostyle being present.
The urostyle is a long cylindrical rod which articulates with the sacrum generally by two facets.
The urostyle is post-sacral and corresponds to three or more modified vertebrae.