bio 101 muscle

bio 101 muscle - Pushing the Limits: EXERCISE PHYSIOLOGY...

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Pushing the Limits: EXERCISE PHYSIOLOGY #1. How does a nerve propagate an electrical signal? #2. How does a nerve stimulate a muscle? #3. How does a muscle contract?
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Muscle Muscle Chapter 46: pages 921-926 Chapter 46: pages 921-926
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Big Picture: Muscles Anatomy: Functional unit is the Contraction: Myosin heads bind to Actin use ATP for conformational change Regulation: Nervous control and Ca +2 availability (diffusion and ATPase pumps)
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Types of Vertebrate Muscle Table 46.1
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Skeletal Muscle Anatomy Fig 46.17
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Sliding Filament Hypothesis of Muscle Contraction Fig 46.18 What is Myosin? What is Actin?
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How Do Actin and Myosin Interact?
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Fig 46.16
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Fig 46.22
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No ATP Myosin is constantly bound to Actin Rigor Mortis (12 hr after death)
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How are muscle contractions regulated? What are troponin and tropomyosin?
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Myosin Actin
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Ca +2 binds to Troponin shifts the troponin - tropomyosin complex Ca Ca +2 +2 Exposes Myosin binding sites
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bio 101 muscle - Pushing the Limits: EXERCISE PHYSIOLOGY...

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