Matching Pairs Skeletal Muscle AnatomyOnline version Different parts of the skeletal muscle. by Lily Coutu 1 the sarcoplasmic reticulum plays an active role in... 2 epimysium covers the ... 3 myofibrils contain bundles of... 4 myofilaments come in two different types 5 sarcomeres are made up of... 6 sarcolemma contains... 7 skeletal muscle fibers and cells are surrounded by a membrane called... 8 a sarcomere is a contractile unit of... 9 fascia covers the ... 10 the whole muscle contains ... multiple nuclei, myofibrils and sarcoplasmic reticulum muscle fiber filaments epimysium whole muscle sarcolemma storing and releasing Ca2+ fascicles that are wrapped in perimysium myofilaments thick/dark (myosin/A band) and thin/light (actin/I band) myofilaments