Skeletal muscle-sarcomere a The sarcomere is arcomel the segment of the myofibril between 2水 two adjacent Z lines Triad 拉 It is the basic contractile unit of striated muscleSkeletal muscle-sarcomere ◼ The sarcomere is the segment of the myofibril between two adjacent Z lines. ◼ It is the basic contractile unit of striated muscle