Question

why the muscle fibres are arranged in parallel manner?​

Answer 1

parallel muscles have fascicles that are arranged in the same direction as the long axis of the muscle The majority of skeletal muscles in the body have this type of organization. ... Muscle Shapes and Fiber Alignment.

Answer 2

because the fascicles pull on the tendons at the angel , they do not move the tendon as far as their parallel muscles counterparts. despite this they generate greater tension because they possess a greater amount of muscle fiber than similarly sized parallel muscles