Final answer:
The nurse's presentation should focus on the mechanism of muscle contraction, the structure and function of different muscle types, and the role of calcium ions in muscle function, especially cardiac muscle excitability.
Step-by-step explanation:
For a nurse preparing a presentation about muscle function, it is crucial to include the mechanism of muscle contraction. This encompasses understanding the organization of muscle tissue and the structure and function of the three types of muscle: skeletal, cardiac, and smooth. Muscle contraction operates under the sliding filament theory, where actin and myosin filaments slide past each other to shorten the muscle fiber, resulting in contraction. Skeletal muscles are voluntary and are responsible for movement, while smooth muscle tissue, found in internal organs, controls involuntary actions. Cardiac muscle is unique to the heart and is involved in pumping blood throughout the body.
The presentation should also touch on the role of neural transmission in muscle function, especially how normal concentrations of calcium ions are crucial for cardiac muscle excitability. Additionally, fitness and health benefits of different forms of exercise, as well as common muscular disorders, should be discussed to provide a comprehensive understanding of muscle function and its relevance to nursing practice.