Discussion:
Bone reformation
Julia has just started a weight-lifting program. As she lifts a dumbbell, her muscles contract
1. Describe and explain how muscle contraction works at the molecular level:
2. How do actin and myosin interact in a sarcomere to bring about muscle contraction?
3. What roles do ATP and calcium play?
4. Describe the longer-term effect of Julia's program. How will her muscles adapt over time to the change in workload?
5. Explain what happens to bones as a result of these weight-bearing exercises. Include an explanation of calcium and bone remodeling and how this relates to homeostasis.
Write your answer/response in detail with examples and facts and figures using APA style of formatting, size 12, font Times new roman and answer must be single spaced