Answer:
An angiosome is composite block of tissue supplied by the same source artery. Adjacent angiosomes are linked by intervening reduced caliber vessels referred as choke vessels. In principle a flap can support one angiosome supplied in a random cutaneous fashion.
Pantographic expansion is a method of cutting advancement flap to release tension at the base of the flap. Washio flap is the retroauricular temporal flap. The area of skin supplied by the superficial temporal artery and the retroauricular area is raised as a flap based on the superficial temporal artery. The Bakamjian flap is the deltopectoral flap based on the first, second, and third perforating branches of the internal mammary artery.