236 UNIT 12 introduction to Muscularsstern MusceTissue 2. Match each of the following terms with its description/function: transverse tubule l. connective tissue wrapping around a muscle fiber sarcoplasmic reticulum 2. organelle packed with myofilaments epimysium transverse tubule and its flanking terminalcisternae d. thin filament 4 invagination of the sarcolemma 5. connective tissue wrapping around fascicle myofibril 6. the region of sarcolemma across from the axon terminal f triad at the neuromuscular junction endomysium 7. consists of actin, troponin, and tropomyosin 8, stores calcium h. motor end plate 9. consists of myosin sarcomere 10, a bundle of muscle fibers i. connective tissue wrapping around a muscle perimysium 12. functional unit of muscle contraction k. thick filament fascicle tivity 2: Examining the Microscopic Anatomy of skeletal Muscle Tissue and the Neuromuscular Junction 1. Briefly describe the microscopic appearance of skeletal muscle tissue. 2. Identify the structures of the neuromuscular junction in the following photomicrograph.