Final answer:
Muscular system problems such as muscle weakness, fatigue, involuntary muscle spasms, and loss of muscle mass greatly impair health, with conditions like DMD and cachexia syndrome being prime examples.
Step-by-step explanation:
The muscular system is integral to the body’s overall health and functionality. Problems with the muscular system, such as muscle weakness, fatigue, involuntary muscle spasms, and loss of muscle mass, can severely impact a person's health and daily activities. Conditions like Duchenne muscular dystrophy (DMD) manifest through progressive weakening and atrophy of the skeletal muscles due to the absence of dystrophin, a key protein. Without dystrophin, muscle contractions can damage cell structures, leading to the inability of muscles to properly function and maintain mass, resulting in muscle weakness and fatigue. Furthermore, conditions such as cancer and AIDS can cause muscle atrophy through the cachexia syndrome, while muscle fatigue, which leads to decreased muscle contractions, is often exacerbated by reduced ATP, lactic acid buildup, and imbalances of electrolytes like Na+ and K+. Consequently, the answer to the question is d) All of the above since all these issues are a consequence of muscular system disorders.