synapsed by synapsed by skeletal muscle fiber alpha motor neuron extrafusal muscle fiber 2020-09-26T21:06:15Z myofibra extrafusalis TH:H3.03.00.0.00007 A skeletal muscle fiber that is innervated by alpha motor neuron and generates tension by contracting, thereby allowing for skeletal movement. These fibers make up the large mass of skeletal muscle tissue and are attached to bones by tendons. intrafusal muscle fiber David Osumi-Sutherland