Study-Guide-for-MCB244-Exam-3-2012

8 what are the 4 major steps of skeletal muscle

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Unformatted text preview: and bands of the sarcomere (A, I & H bands, Z & M lines and the zone of overlap). 7. How does the morphology of the different regions & zones of the sarcomere change during contraction and what is the basis of muscle shortening according to the sliding filament theory? 8. What are the 4 major steps of skeletal muscle contraction? Know each step in detail starting with the events that occur at the neuromuscular junction and ending with muscle relaxation. Know the level of detail presented in my slides entitled “!!Review of Muscle Contraction Cycle!!“ (hint) 9. What role does creatine phosphate play in skeletal muscle contraction? 10. What are the causes of muscle fatigue? 11. What is muscle tension and what factors influence it? 12. What is a muscle “twitch” and what are the three phases that comprise a twitch? 13. Be familiar with the different types of frequency stimulations. How do they differ? 14. What is a motor unit and what is meant by their recruitment? 15. What are the characteristics of an isotonic vs. isometric contraction? What factors determine whether the muscle shortens, lengthens, or stays the same? 16. Know the general characteristics of the three types of skeletal muscle fibers, how they differ from each other, and what each is designed to do. 17. Be able to compare and contrast general differences in the characteristics and functions of the 3 types of muscles (skeletal, cardiac and smooth). Chapter 9-3: Articulations – You are only responsible for the section covering types of movements (pp 258-263) • Be familiar with the following types of movements and representative location...
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