dorsal vessel

基本解释

Both annelids possess a closed circulatory system with tubular hearts and a dorsal and ventral blood vessel. In both specimens, pin the following.
二种环节动物皆具有闭锁循环系，包括管状的心脏及背血管，腹血管。用大头针标示二标本的下列构造：。
The metathoracic accessory pulsatory organ is very small and has no direct channels connecting the dorsal vessel, but there is a pulsating membrane without muscle.
后胸辅搏动器很小，与背血管无直接通道，具有一个没有肌肉的搏动膜。
Objective The investitgation of vascularized periosteal flap with dorsal branch of anterior interossea vessel was performed to provide anatomical basis for periosteal flap transposition.
目的为设计以骨间前血管腕背支为蒂的骨膜瓣移位手术的开展提供应用解剖学基础。