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• Explain what is happening here in muscle contraction. Be sure to tell me what role Ca+, ATP, myosin, and actin play. Binding of a new mol- ecule of ATP releases the myosin head from actin and a new cycle begins Thick filament T Thin filament moves toward center of sarcomere Myosin head dow energy configuration) Releasing ADP and myosin returns to its low-energy configuration, sliding the thin filament Starting here, the myosin head is bound to ATP and is in its low-energy configuration -Myosin head dow energy configuration) Cross-bridge Thick Actin The myosin head hydrolyzes ATP to ADP and inorganic phosphate () and is in its high-energy configuration Myosin binding sites Myosin head thigh- energy configuration) The myosin head binds to actin, forming a cross-bridge

• Explain what is happening here in muscle contraction. Be sure to tell me what role Ca+, ATP, myosin, and actin play. Binding of a new mol- ecule of ATP releases the myosin head from actin and a new cycle begins Thick filament T Thin filament moves toward center of sarcomere Myosin head dow energy configuration) Releasing ADP and myosin returns to its low-energy configuration, sliding the thin filament Starting here, the myosin head is bound to ATP and is in its low-energy configuration -Myosin head dow energy configuration) Cross-bridge Thick Actin The myosin head hydrolyzes ATP to ADP and inorganic phosphate () and is in its high-energy configuration Myosin binding sites Myosin head thigh- energy configuration) The myosin head binds to actin, forming a cross-bridge

Human Anatomy & Physiology (11th Edition)
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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• Explain what is happening here in muscle contraction. Be sure to tell me what role Ca+, ATP, myosin, and actin play. Thin filaments( Binding of a new mol- ecule of ATP releases the myosin head from actin, and a new cycle begins. Thick filament Thin filament moves toward center of sarcomere. 1962-BITTIGE Myosin head (low- energy configuration) ADP+ Releasing ADP and P, myosin returns to its low-energy configuration, sliding the thin filament. frith-atte 2 Starting here, the myosin head is bound to ATP and is in its low-energy configuration, $3943333 22 Thin filament -Myosin head (low- energy configuration) Cross-bridge Thick filament Actin 2 The myosin head hydrolyzes ATP to ADP and inorganic phosphate () and is in its high-energy configuration. a Myosin Myosin binding sites 1 -Myosin head (high- energy configuration) The myosin head binds to actin, forming a cross-bridge.
Transcribed Image Text:• Explain what is happening here in muscle contraction. Be sure to tell me what role Ca+, ATP, myosin, and actin play. Thin filaments( Binding of a new mol- ecule of ATP releases the myosin head from actin, and a new cycle begins. Thick filament Thin filament moves toward center of sarcomere. 1962-BITTIGE Myosin head (low- energy configuration) ADP+ Releasing ADP and P, myosin returns to its low-energy configuration, sliding the thin filament. frith-atte 2 Starting here, the myosin head is bound to ATP and is in its low-energy configuration, $3943333 22 Thin filament -Myosin head (low- energy configuration) Cross-bridge Thick filament Actin 2 The myosin head hydrolyzes ATP to ADP and inorganic phosphate () and is in its high-energy configuration. a Myosin Myosin binding sites 1 -Myosin head (high- energy configuration) The myosin head binds to actin, forming a cross-bridge.
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