What triggers the movement of the thin filament?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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What triggers the movement of the thin filament? Is it because of the high --> low energy configuration? The exact mechanism is confusing to me. 

Figure 50.28a-5
ADP+P₁
ATP
Thin filament moves
toward center of sarcomere.
2011 Pearson Education, Inc.
Low-energy
configuration
ATP
4
1996
ADP
Thin filament
- Myosin head (low-
energy configuration)
Cross-bridge
Thick
filament
Actin
ADP
2
Myosin-
binding sites
High-energy
configuration
3
Transcribed Image Text:Figure 50.28a-5 ADP+P₁ ATP Thin filament moves toward center of sarcomere. 2011 Pearson Education, Inc. Low-energy configuration ATP 4 1996 ADP Thin filament - Myosin head (low- energy configuration) Cross-bridge Thick filament Actin ADP 2 Myosin- binding sites High-energy configuration 3
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