11.軸式皮瓣(axial pattern flap)的血液循環來自: (A)皮動脈及靜脈(cutaneous artery and vein) (B)只靠組織液之滲透供應其所需之營養 (C)靠肌肉之血管(myocutaneous perforators) (D)只靠真皮之微血管(subdermal plexus)