p917-919 questions and indexed

p917-919 questions and indexed - 16. 918 2 What is energy...

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Joseph Leonard – 3/11.08 – p917 – 919 questions and indexed 1. 917 – 1 What does a muscle fiber consist of? 2. 917 – 1 What is each myofibril made up of? 3. 917 – 1 What are the thick protein filaments made of? 4. 917 – 1 What are the thin protein filaments made of? 5. 917 – 1 What gives muscle tissue its striated appearance? 6. 917 – 1 How are myosin and actin filaments arranged? 7. 917 – 1 What are actin filaments anchored to in the muscle? 8. 917 – 1 What is the Z line? 9. 917 – 1 What is the region from one Z line to another known as? 10. 917 – 2 What is the functional unit of muscle contraction? 11. 917 – 2 What causes a sarcomere to get smaller during muscle contraction? 12. 917 – 2 What do actin filaments look like? 13. 917 – 2 What happens when a nerve impulse stimulates a muscle fiber to contract? 14. 918 – 1 What causes the muscle fiber to contract? 15. 918 – 2 Where does muscle contraction draw its energy?
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Unformatted text preview: 16. 918 2 What is energy used for in muscle contraction? 17. 918 2 What would happen if there was no more ATP? 18. 918 3 Why is muscle contraction an all-or-none response? 19. 918 3 What is the force of muscle contraction determined by? 20. 918 3 Why must some muscles always at least partially contracted? 21. 918 3 What are some muscles that must remain contracted? 22. 918 3 What might prolonged contraction do to muscles? 23. 918 3 How doe the body prevent this from happening? 24. 919 1 What are the two end of skeletal muscle attached to ? 25. 919 1 At what part of the bone are muscles attached? 26. 919 1 What is a tendon? 27. 919 1 What is the point where the muscle attaches to the stationary bone? 28. 919 2 What is the biceps muscle known as? 29. 919 2 What is an extensor?...
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