Myosin & Muscle Contraction Terms: G-actin, Tropomyosin, Troponin
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Last updated 6:40 PM on 4/5/26
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4 Terms
1
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Describe the structure of a thick myosin filament - where are the tails and heads of a myosin protein found in a thick myosin filament?
Heads - poke up all around the filament
Tails - form the core of a thick filament
2
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Describe how G-actin, tropomyosin and the troponin complex make up the structure of a thin actin filament
G-actin: beads
Tropomyosin: rope
Troponin complex: snowman
3
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Describe the changes that occur in the following areas during skeletal muscle contraction: sarcomere, I-band, A-band, H-zone.
Sarcomere: shortens
I-band: shortens
A-band: doesn't change
H-zone: shortens
4
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