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Quiz Ch. 9 Part II

Quiz Ch. 9 Part II. What is a motor unit? Which ion binds to troponin, causing tropomyosin to move? According to the Sliding Filament Theory, what two structures are sliding? What is the function of acetylcholinesterase? What is the cause of Myasthenia Gravis?. The Muscular System. Part II

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Quiz Ch. 9 Part II

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  1. Quiz Ch. 9 Part II • What is a motor unit? • Which ion binds to troponin, causing tropomyosin to move? • According to the Sliding Filament Theory, what two structures are sliding? • What is the function of acetylcholinesterase? • What is the cause of Myasthenia Gravis?

  2. The Muscular System Part II Skeletal Muscle Contraction

  3. Introduction

  4. Neuromuscular Junction • Neurons

  5. Neuromuscular Junction • Synapse • Neurotransmitters

  6. Fig. 9.8

  7. Neuromuscular Junction • Neuromuscular Junction • Motor end plate

  8. Fig. 9.8

  9. Neuromuscular Junction • Motor Neurons are branched • Motor Unit • Synaptic Cleft

  10. Fig. 9.9

  11. Fig. 9.8

  12. Fig. 9.8

  13. Stimulus for Contraction • Acetylcholine (ACh)

  14. Stimulus for Contraction • Muscle impulse

  15. Excitation Contraction Coupling

  16. Fig. 9.10

  17. The Sliding Filament Theory

  18. Fig. 9.11

  19. Fig. 9.11

  20. Cross-Bridge Cycling • Sarcomere shortening • ATP is required • Cross- bridge binding repeats

  21. Fig. 9.10

  22. Relaxation

  23. Fig. 9.10

  24. Diseases of the Muscular System • Duchanne Muscular Dystrophy • Polio • Botulism

  25. Clin. App. 9.1: Myasthenia Gravis

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