exercise_muscular_topic_3 - actin?...

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The Muscular System: Sliding Filament Theory 1. a. The thick filament is composed of what molecule? _______________________ b. Flexing the head of this molecule provides what is known as the _________________________. 2. The myosin head contains binding sites for what two molecules? a. b. 3. Three molecules make up the thin filament. a. Which molecule has a binding site for myosin heads? _____________________________ b. Which molecule covers this binding site? _________________________________________________ c. Which molecule has a binding site for calcium ions? ______________________________________ 4. What molecule must bind to the myosin head in order for it to disconnect with
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Unformatted text preview: actin? _________________________ 5. Hydrolysis of the molecule in question 4 returns the myosin molecule to the _________________________ confirmation. 6. Binding of the myosin heads sequentially prevents _____________________ of the thin filament. 7. Name three roles for ATP in the contraction of muscle. a. b. c. 8. What molecule is connected to the Z line? _________________________ 9. Which of the following shorten during contraction? (may be more than one) a. Thin filament b. Sarcomere c. H zone d. Thick filament 10. a. What is the name of the condition in which muscles become rigid after death? _________________________________ b. What is this condition due to?...
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exercise_muscular_topic_3 - actin?...

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