Chapter 36, Problem 18STP

Summary Introduction

To explain:

The reason that the muscles in the arm fatigue the quickest.

Introduction:

In most animals, muscle is soft tissue. Muscle cells produce actin, myosin and protein filaments that pass one another, creating a contraction that affects both the cell's length and size.

Explanation of Solution

Muscle in the arm is related to fatigue, often after exercising or hard work. The strength of the muscles decreases as it experiences exhaustion, allowing them to feel weaker. The workout is a common source of muscle fatigue, but it may be caused by other factors of health as well.

Conclusion

Thus, the muscles in the arm fatigue the quickest.