Wallarian degeneration is seen in: (A) Distal to injury, (B) Proximal to injury, (C) At both ends, (D) In cell body (soma)
Answer is A. The destructive and constructive changes which occur in a nerve fibre after injury are called degeneration and regeneration respectively. The degenerative changes in distal pa of cut nerve fibre are Wallerian degeneration. Ref: guyton and hall textbook of medical physiology 12 edition page number: 74,75,76