Muscular system

4. denoting a dense band that connects cardiac muscle cells
6. protein thick muscle filaments
8. wavelike motion which helps force the contents of tubular organs along, e.g. intestines
11. muscles which work together to complete a movement
15. relatively immovable end of skeletal muscle
18. type of muscle cells which twitch for longer than skeletal muscle cells
20. functional unit of muscle contraction; causes striation
23. process by which the forces of individual twitches combine
24. threadlike structures within the sarcoplasm
25. denoting sustained muscular contraction
27. movement which increases the angle
28. layer of connective tissue that separate muscle tissue into fascicles
29. layer of thin connective tissue
30. increase in the number of motor units being activated during a contraction
31. movement which decreases the angle
32. linkages formed between actin and myosin

1. breaks down acetylcholine
2. protein in muscle cells that help maintain oxygen availability
3. agent which causes movement
5. recording of an electrically stimulated isolated muscle
7. type of self-exciting smooth muscle displaying rhythmicity
9. agent which oppose a movement
10. denoting material within a muscle fiber
12. type of muscle cells containing less organized filaments of actin and myosin
13. bundles of skeletal muscle fibers
14. single contraction reflecting stimulation of a muscle fiber
16. relatively movable end of skeletal muscle
17. thin muscle filaments
19. signal which stimulates a skeletal muscle fiber
21. protein which stops stem cells from developing into muscle cells
22. layer of connective tissue that closely surrounds each skeletal muscle
26. broad fibrous sheets of connective tissue