For this discussion board post, you must write a thoughtful answer to TWO (2) of the following questions (minimum 150 words each; please clearly label which question you are answering).
1. Why is it more beneficial for a person stranded in the cold to keep moving and exercising rather than remaining inactive?
2. Muscles that are immobilized for long periods of time, as with a cast, frequently get smaller. Why? What is necessary to revitalize them?
3. Why do you suppose activities such as swimming and fast walking are so beneficial? Are there any negative attributes to activities such as racquetball and sprinting?
4. How can weight lifters have such enormous muscles, while long-distance runners have lean muscles?
5. What effect would there be on the body if intestinal peristaltic waves were stopped either by infection or injury?
6. Why do athletes “warm up” before a competitive event? Would you expect the warm-up period to make contraction more or less efficient? Why?
7. Visit a local gym frequented by body builders. Obtain information on the procedures used to build muscle mass and an explanation of how those procedures accomplish that goal.
8. If the number of myosin heads were doubled, what would be the effect on force
production? ATP consumption?
9. What is a muscle spasm? How do you think it may be caused?
10.Are spasms and cramps related? Compare and contrast the different possible mechanisms of each.
11.Draw diagrams of different fascicle arrangements and describe what type of movement is characteristic of each (i.e., short range, powerful, etc.). Then, have students apply these ideas to place the different fascicle types in logical locations on an articulated skeleton (e.g., the deltoid origin and insertion is a logical example of perfect use of a convergent pattern).