The branches diverged from these arteries formed subcutaneous arterial network,and the arteriols orignated from the network went to corium layer and formed subdermal arterial network.

• 它们发出的分支入浅层构成皮下动脉网，再由皮下动脉网发出小动脉达真皮层形成真皮下动脉网，并相互吻合交通，形似“筛网”状。