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Lecture 11 - Muscular System

Lecture 11 - Muscular System - Calcium Ions •...

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The Muscular System
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The Muscular System: Structure and Function
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Muscle: Characteristics
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Skeletal Muscle Origin Insertion
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Skeletal Muscle Synergistic muscles Antagonistic muscles
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Muscle Structure Muscle cell (muscle fiber) Fascicles Fascia
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Muscle Cell Structure Myofibrils Myosin filament Actin filament
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Muscle Cell Structure The Sarcomere Contractile unit
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Muscle Contraction: Sliding Filament Model
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Muscle Contraction Cycle of interactions between myosin and actin
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Unformatted text preview: Calcium Ions • Tropomyosin-troponin complex Muscle Contraction: Nervous stimulation • Neuromuscular junction • Acetylcholine Muscle Contraction: Strength • Motor unit Muscle Contraction: Strength • Frequency of stimulation Muscles Require Energy • ATP ATP comes from many sources Endurance versus Strength • Slow-twitch muscle cells • Fast-twitch muscle cells Exercise Training • Aerobic exercise • Resistance training...
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