Muscular System Review

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Muscular SystemReview
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Origin and Insertion
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Parts of a Musclemuscle fiber, fascicle,
endomysium, perimysium, epimysium, tendon
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Tendon vs Aponeurosis
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Name a muscle

• Shape
• Origin and insertion
• Relative size
• Directions of fibers
• Action
• Body region

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Lets give it a try

• Latissimus DORSI
• TRANSVERSUS abdominis
• ADDUCTOR longus
• GLUTEUS maximus
• ORBICULARIS oris
• Rectus FEMORIS
• STERNOCLEIDOMASTOID

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Muscle contraction
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Sacromere Dance

• 1. Ca causes change in SARCOLEMMA
• 2. Distracts chaperone (troponin)
• 3. boy ACTIN bad, grabs Myosin
• 4. drags her to the middle of the dance floor

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Terms

• Sarcolemma
• Sarcomere
• Fiber
• Fascicle
• myoglobin

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Motor Unit
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Smooth or StriatedVoluntary or
Involuntarylocation
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Slow Twitchvs Fast Twitch
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SLOW vs FAST

• RED in color Lighter
• Slow contraction fast
• Slow fatigue easily tired
• High myoglobin low
• High mitochondria low

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Isotonic vs Isometric
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Antagonistic vs synergistic
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Tetany vs Tone
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Muscle Fatigue
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Muscle Cramp-sustained contraction or
overshortening
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Rigor Mortis