What systems of the body can be damaged through inhalation of harmful chemicals?

Inhalation of harmful chemicals primarily affects the respiratory system, as it is directly involved in the exchange of gases between the body and the environment. When harmful substances are inhaled, they can cause irritation, inflammation, or damage to the lungs and airways, leading to respiratory issues such as coughing, wheezing, or even chronic conditions like asthma or bronchitis.

Additionally, certain chemicals can also impact the endocrine system. Some airborne toxins may interfere with hormonal regulation, affecting processes such as metabolism, growth, and reproductive health. This dual impact on both the respiratory and endocrine systems makes this choice the most accurate in the context of the question, highlighting the significance of understanding how inhalation can lead to systemic health issues.

Other options, such as the digestive and circulatory systems, the nervous and muscular systems, and the musculoskeletal and integumentary systems, while they could be affected by certain exposures, are not directly impacted through inhalation in the same manner as the respiratory and endocrine systems.