络脉中浮行厂浅表部位的称为“浮络”。络脉中最细小的分支称为“孙络”，遍布全身，难以计数。孙络细小密布，其作用主要是输布气血以濡养全身组织。

"Superficial Collaterals" are those which are distributed on the superficies of the body, and the smallest branches of the collaterals are called "Minute Collaterals". They are innumer- able and are distributed all over the body.Minute Collaterals are very thin and distributed densely, their functions are to transport Qi and blood and nourish the tissues.