1. – 65.. 1. name this protein. actin h band 2. name this specific band
TRANSCRIPT
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1. – 65.
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1. Name this protein.
actin
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H Band
2. Name this specific band.
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3. Name this unit.
Fascicle (fasciculus)
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4. Name this unit.
Myofiber (muscle cell)
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5. Name this protein.
myosin
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6. Name bluish CT layer.
perimysium
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M line
7. Name this dark line.
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Z line
8. Name these specific dark lines.
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9. Name these purple structures.
mitochondria
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10. Name this entire structure.
myofiber
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11. Name these blue structures.
Sarcoplasmic reticulum
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12. Name these yellow structures.
Transverse tubules
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13. Name this unit.
triad
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14. Name this entire unit; it is the smallest unit of a muscle contraction (red bracket).
sarcomere
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15. Name the cytoplasm inside
sarcoplasm
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muscle
16. Name this covering.
epimysium
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1
2 3
4
17. Which is the crossbridge?
4
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18. Which is in the contacted state?
1 2
2
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19. What is the name of this myofilament?
actin
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20. What is the name of this molecule?
ATP
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21. What is the SPECIFIC role of this molecule in muscle
contraction? Allows myosin to perform a(n)__________ so actin is
pulled inward.power stroke
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22. What is the name of the 3 purple protrin complex?
troponin
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23. What happens to the width of the A band during contraction?
Stays the same
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What condition are these muscles in?
hypertrophy
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25. What is represented by the green circles in this diagram?
calcium
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26. Where specifically is calcium stored in the muscle?
Sarcoplasmic reticulum
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27. What is the name of the gray molecule?
tropomyosin
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28. What is the other source for recharging the ATP battery in the muscles? (this compound is unique to muscles)
Creatine phosphate
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29.What is the specific function of calcium in a muscle contraction? Calcium ions bind to_________ which causes a change in the conformation of the tropomyosin complex that exposes the myosin binding sites on the actin filament.
troponin.
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30. What is this known as?
Sliding filament theory
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31. What is this set-up called?
Motor unit
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32. The products of aerobic respiration are water, ATP, and _____.
Carbon dioxide
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33. Name this red area shown by red arrow.
Motor end plate
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34. Name this yellow structure of which you see the end of.
Motor neuron
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35. Name these blue “containers”.
Synaptic vescicles
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36. What is the general name for the compound that is in these blue “containers”.
neurotransmitter
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37. Name these structures shown by red arrows.
Transverse tubules
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38. Name this entire area shown by bracket.
Neuromuscular junction
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39. During the contraction of a sarcomere, calcium ions bind with the protein _____.
troponin
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40. This is a graph of a muscle contraction. What is it called?
myogram
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41. Name this blue part of a muscle twitch.
Latent period
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42. Name this red part of a muscle twitch.
Contraction periodContraction period
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43. What is the bracketed part of this graph representing dealing with a muscle contraction?
Treppe or summation
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44. What is the bracketed part of this graph representing dealing with a muscle contraction?
Tetanus (tetanic contraction)
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45. Choose the type of muscular contraction shown below.
isotonic
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46. The reddish brown color of muscle is due to the presence of _____ molecules
myoglobin
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47. Which molecule is produced during exercise, resulting in the oxygen debt?
Lactic acid
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48. Would there be mostly slow twitch or fast twitch fibers in this part of your Thanksgiving Turkey?
Fast twitch
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49. The minimum stimulus needed to cause a contraction is called the _____.
Threshold stimulus
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50. What type of muscle is found in these structures?
Smooth muscle
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51. A large broad sheet of connective tissue, such as on the abdomen or head, that muscles can attach to is called what?
aponeurosis
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52. – 57. NAME THE MUSCULAR DISORDER/DISEASE.
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52.
state of muscular rigidity that begins 3-4 hours after death and lasts about 24 hours
•After death, Ca+2 ions leak out of the SR and allow myosin heads to bind to actin
•Since ATP synthesis has ceased, crossbridges cannot detach from actin until proteolytic enzymes begin to digest the decomposing cells.
Rigor mortis
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53.
an involuntary and forcibly contracted muscle that does not relax
cramp
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54. a group of muscle-destroying deseases inherited as a sex-linked recessive trait; the muscle shrinks and no longer contracts; it is due to the absence of a protein that “props” up the muscle cell.
Muscular dystrophy
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55. This disorder causes extreme muscle fatigue
It is an autoimmune disease - one's own body makes antibodies against one’s own ACh receptors
Myasthenia gravis
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56. A bacteria from undercooked foods produces a toxin which prevents ACh release at the N-M Junction
•The result is no muscle stimulation and no muscle movement; results in paralysis and death
botulism
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57. This bacterial disease heightens the chemical signal from the nerve to the muscle which causes the muscles to continuously tighten up in a huge continuous contraction or spasm.
tetanus
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58. – 65. WRITE WHETHER EACH STATEMENT DESCRIBES SLOW TWITCH OR FAST TWITCH MUSCLES.
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58. When your muscles hypertrophy, these are the fibers that get larger.
fast
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59. These are red.
slow
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60. These are easily fatigued.
fast
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61. These are best in long slow sustained contractions.
slow
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62. These have more mitochondria.
slow
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63. These would be more prominent in marathon runners than sprinters.
slow
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64. These do not have the specialized myoglobin.
fast
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65. Would be more numerous in leg muscles that pectoral muscles.
slow
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THE END