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The Muscular System Review 1. What are the three types of muscle found in the muscular system? a. . b. . c. . 2. The contraction of all muscle is due to the movement of __________________ 3. Myo or Mys refers to ____________________ 4. Compare and contrast the three types of muscle (at least 3 similarities and 3 differences) 5. Cells are surrounded and bundled by _______________________ ______________. 6. What are the three connective tissue layers we discussed in class and what part of the muscle do they wrap surround? 7. What are the four main functions of skeletal muscle? a. . b. . c. . d. . 8. How are muscles attached to bone? Describe this structure 9. Muscle fiber is the same thing as a _________________ ___________ 10. Be able to describe the microscopic anatomy (structure) of a muscle fiber a. Sarcolemmab. Myofibrilsc. Sarcoplasmic reticulum 11.Myofibrils are aligned to give distinct bands. What are these two bands and what are they made of? 12.Thick filaments are composed of the protein _______________ 13.Thin filaments are composed of the protein ________________ 14.The thin filaments are anchored to the ____________________ 15.Ca⁺ is stored and released from the ___________________________ _________________________________ 16.Muscle cells must have the following four things in order to both contract and return to their normal resting state. Describe each one a. Excitabilityb. Contractilityc. Extensibilityd. Elasticity- 17. Skeletal muscles are stimulated by a ____________________ ________________. 18. One motor neuron and ALL the skeletal muscle cells stimulated by that neuron is called a _____________________ __________________ 19. The junction between the axon terminal and the muscle it is stimulating is called the _____________________________________________ __________________ 20. Once an action potential reaches the axon terminal, _________________________ are released in order to continue the action potential through the muscle to cause contraction 21. The specific neurotransmitter involved in skeletal muscle contraction is _________________________________, sometimes abbreviated ________ 22. ACh attaches to receptors on the ____________________________ of the muscle cell causing ________________ channels to open. This allows the action potential to continue into the muscle cell. 23. Explain the sliding filament theory 24. Muscle fiber contraction is all or _____________________________, meaning____________________________________________________ 25.Graded response is _____________________________________________________________ _____________________________________________________________ 26. What are the four types of graded responses? (use the book page 172 fig. 6.9) Draw the picture as well a. . b. . c. . d. .