The density of vessels and vessel plexuses in the neck and trunk is higher than that of the legs.

躯干和颈部的血管密度高，血管网丰富而层次清楚，而四肢的血管密度低，血管网稀而层次少。

The distribution and structure of the cardiac ganglia and nerve plexuses of 8 Pekin ducks were studied by using methods of gross anatomy and histology.

以大体解剖和组织切片方法观察了8例北京鸭的心神经丛和心神经节的分布与构造。

The ventral trunk forms plexuses, and distribute to the end of the oesophagus, the diaphragmatic surface of the stomach, the liver, the pancreas and the beginning part of the duodenum.

腹侧干组成神经丛分布在食管末端、胃的隔面、肝、胰和十二指肠起始端。