predorsal

predorsal

1. predorsal bundle

[医] 顶盖脊髓束

2. predorsal fasciculus

背前束

3. predorsal Area or distance anterior to first dorsal fin.

背前的第一背鳍前的区域或距离。

4. predorsal ridge A low narrow ridge of skin on the midline of the back anterior to the first dorsal fin base.

背前脊一个皮肤的低狭窄脊，位于第一背鳍基底前的背部中线上。

5. Predorsal length From the base of the anteriormost dorsal fin ray to the tip of the snout or upper lip.

背前长从最前面背鳍鳍条基底处到吻尖或上唇前端。

6. predorsal scales The row of scales along the midline between the dorsal fin and the back of the skull. In counting, all scales crossing the midline are included.

背前鳞沿著背鳍与头盖骨背部之间中线的鳞片列。在计算时，横越中线的所有鳞片都被包括在内。

7. predorsal myomeres A count of the number of myomeres or muscle blocks before the dorsal fin in eel leptocephali. The count includes the myomere under the dorsal fin origin.

背鳍前的肌分节鳗鱼狭首型幼鱼背鳍前肌分节或肌肉块的数量计数。计数包括背鳍起始点下面的肌分节。