8-10. What structures are responsible for the trophism of striated muscle? a. nuclei and common organelles
8-11. Thin myofilaments of the sarcomere of striated muscle fibre make up: c. isotropic disk
8-12. Thick myofilaments of the sarcomere of striated muscle fibre make up: d. anisotropic disk
8-13. Sarcomeres represent the basic reoccuring structural units of the myofibril, comprising the myofilaments and associated organelles which lie between: b. two Z-bands
8-14. Common border-line structure between adjacent sarcomeres is: b. telophragma (Z line)
8-15. Area of the sarcomere of striated muscle, in which one thick filament is surrounded by six thin ones: c. overlap zone
8-16. In striated muscle fibre, the I-band of the sarcomere of myofibril is made up of: b. actin filaments
8-17. H-zone (light zone) of A-band of the myofibril of striated muscle fibre is made up of: a. myosin filaments
8-18. Z-line (telophragma) of the myofibrils of striated muscle fibre is situated: a. in the middle of I-band
8-19. Myosin filaments of the striated muscle are connected with Z line by means of molecules of the following protein: e. titin
8-20. In case of contraction of the striated muscle fibre, the heads of myosin molecules come into contact with molecules of the following proteins: c. actin
8-21. M-line (mesophragma) of the myofibrils of striated muscle fibre is situated: c. in the middle of A-band
8-22. M line of the sarcomere of striated muscle fibre is made up of: d. myomyosin
8-23. T-tubules represent: c. invaginations of the sarcolemma into the sarcoplasm
8-24. Triad of the striated muscle fibre represents a complex that consists of: a. one T-tubule and two cisterns of the sarcoplasmic reticulum
8-25. Canaliculi of the sarcoplasmic reticulum of the striated muscle fibres contain: a. ions of calcium
