Question

Our skeletal muscle is a fascinating biological tissue able to transform chemical

energy to mechanical energy. It is the most abundant tissue in the human body

(40-45%) of total body weight and provides strength and protection to the

skeleton.

1. Pick any musculoskeletal activity in daily life or sport and identify the main

muscles responsible for the movement and their roles in the movement

2. What are the typical types of fibers in these muscles, how are these fibers

organized and how does this architecture affect your selected movement from

a functional perspective?

3. What are the main factors that determine the force generation in these

muscles?

4. How is the mechanical behavior of a single muscle fiber in tension different

from the whole muscle? What is the functional value?

5. Do your selected muscles cross more than one joint? What are disadvantages

associated with muscles that cross more than one joint?

6. Draw a free body diagram for your movement and calculate the muscular

strength of one of these muscles. What factors affect this muscular strength?

You may make any assumptions as needed

7. Calculate the muscular power and muscular endurance. Again, make

assumptions as needed

8. Model the activity of one of your muscles using a muscle model from the

slides or the Literature. Describe the role of each element

9. How are these muscles and thus the activity affected by age?

10. How are these muscles and thus the activity affected by pre-stretching and

exercise?

Answer 1

Dear Student,

Please do mention the question number for which you want to know the answer from next time as we have limited time to answer a question.

Here I have provided as many details as possible in the allotted time. If you want in detail explanation for any question, please do post that question separately

1)

Hope this helps you ?

All the best