A biological response to harmful stimuli, which can lead to swelling and narrowing of the airways in respiratory conditions.

A biological response to harmful stimuli, which can lead to swelling and narrowing of the airways in respiratory conditions.

• A. Fever
• B. Heat exhaustion
• C. Inflammation
• D. Bronchodilation

Answer: (C)

Inflammation is the body's protective response to harmful stimuli such as infection or injury. It involves immune mediators that increase blood flow and vascular permeability, leading to swelling (edema). In the airways, this swelling and increased mucus can narrow the passages, making breathing more difficult in conditions like asthma or bronchitis. Fever is a systemic temperature rise from immune activity, not specifically about airway swelling. Heat exhaustion results from overheating and dehydration, not airway changes. Bronchodilation would widen the airways, not cause the narrowing described.

Inflammation is the body's protective response to harmful stimuli such as infection or injury. It involves immune mediators that increase blood flow and vascular permeability, leading to swelling (edema). In the airways, this swelling and increased mucus can narrow the passages, making breathing more difficult in conditions like asthma or bronchitis. Fever is a systemic temperature rise from immune activity, not specifically about airway swelling. Heat exhaustion results from overheating and dehydration, not airway changes. Bronchodilation would widen the airways, not cause the narrowing described.