1. Flash Cards
Chapter

2. A muscle which assists another in an action is called a(n):

3. A muscle which does most of the work is called:

4. A muscle which opposes the action of another muscle is called the:

5. Muscles are covered by several layers of fibrous connective tissue called:

6. Skeletal muscles are named according to:

7. What is the function of ligaments?

8. What muscle is called the "kissing" muscle?

9. What muscle is used for blinking and squinting?

10. What is the function of the Intercalated disks with gap junctions?

11. The structure in cardiac muscle which allows contractions to spread quickly are:

12. Identify the type of muscle contraction
When the tension of the muscle fiber is used only to support rather than lift a load.

13. Sarcolemma

14. Sarcoplasm

15. Is a red pigment that stores oxygen for muscle contraction

16. Is a polysaccharide that stores energy for muscle contraction

17. According to sliding filament theory when a muscle fiber contracts, what happens

18. Identify the type of muscle contraction
When the tension of muscle fibers is sufficient to lift a load, many fibers change length as they lift the load.

19. Identify all the chemicals involved in muscle contraction.

20. Where is myosin found in skeletal muscle fiber?

21. What two important binding sites are found on cross bridges of myosin?

22. The thin filament consists of three protein molecules, name them:

23. Actin contains binding sites for:

24. What is the function of tropomyosin?

25. What is the function of troponin?

26. What causes tropomyosin to move away from myosin binding sites on actin?

27. What causes the myosin binding sites on actin to be exposed?

28. What causes the tropomyosin to cover back over actin binding sites?

29. What is required to move calcium ions from sarcoplasm back into sarcoplasmic reticulum?

30. After a sarcomere has contracted fully and calcium ion concentration within cytosol decreases what happens within the sarcomere?

31. What causes skeletal muscles to contract?

32. What is a motor neuron?

33. What part of motor neuron carries impulses to muscle?

34. Invaginations of sarcolemma penetrating deep into interior of muscle cell are called:

35. The space between axon terminal and motor end plate

36. The swollen distal end of motor neuron axon

37. The muscle cell membrane

38. Structures within axon terminal that contain neurotransmitter acetylcholine

39. The contractile unit of muscle fiber that extends from one Z line to the next is called:

40. Identify the structures within skeletal muscle fibers that serve as reservoirs of calcium ions

41. A folded region of sarcolemma at neuromuscular junction is called?

42. What is first event in neuromuscular junction?

43. What happens at neuromuscular junction when action potential arrives at axon terminal?

44. What happens to acetylcholine after is released from its receptor on the motor end plate?

45. what happens as an action potential moves down T-tubules?

46. What happens when calcium ions are present in cytosol of muscle fiber?

47. What is Power stroke?

48. What is the role of ATP during muscular contraction?

49. Occurs at death because muscles cannot relax without ATP

50. The striations observed in skeletal and cardiac muscles are produced by:

51. Myosin binds to actin:

52. A motor neuron and all of the muscle fibers that it innervates is called:

53. Nerve impulses travel to the muscles from the spinal cord through:

54. List the events that occur during muscle contraction, the power-stroke:

55. At a neuromuscular junction, nerve impulses cause:

56. Explain the effect of Botox