Chapter 9.1

Chapter 9.1

Question Answer
skeletal muscle attached to bone and controlled by coice// cells appear long and striped
smooth muscle found in walls of the organ// functions automatically
cardiac muscle found only in heart// cells long and branching and fit together at junctions(discs)
belly fleshy body of muscle between slender points of attachment
Fascia layers of tough connective tissue surrounding large skeletal muscles
Endomysium surrounds individual muscle fibers
Perimysium surrounds small bundles of fibers
Fascicles bundles of muscle fibers
Epimysium outer layer of the fascia
fasica connective tissue
sarcolemma cell membrane of a muscle fiber
transverse tubles points if cell membrane that penetrate deep interior of muscle fiber
Sarcoplasmic reticulum specialized endoplasmic reticulum within muscle fiber
Myofibrils long cylindrical structures in each muscle fiber
Sarcomeres contractile units formed of proteins actin and myosin
motor nerve type of nerve that supplies skeletal muscle with stimulation
Neuromuscular junction area where motor nerve meets muscle fibers
Motor unit nerve and all of the skeletal muscle fibers it supplies

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