Question

Asthma

a) A lung infection caused by bacteria which if left untreated, can be fatal.
b) A fatal condition of the respiratory system in which the lungs harden and darken in color.
c) A condition in which stress or sensitivity to specific substances results in the contracting and narrowing of breathing tubes, causing difficulty in breathing.
d) A condition in which the small air sacs in the lungs fill with fluid, resulting in shortness of breath, sweating, and chest pains.

Answer 1

Asthma is a chronic disease that causes airway obstruction and difficulty breathing. Symptoms include wheezing, chest tightness, and coughing. It is caused by inflammation and narrowing of the airways.

Step-by-step explanation:

Asthma is a chronic and serious disease in which the airways of the respiratory system become obstructed, leading to great difficulty expelling air from the lungs. The airway obstruction is caused by inflammation of the airways (leading to thickening of the airway walls) and a tightening of the muscles around them, resulting in a narrowing of the airways. Because airways become obstructed, a person with asthma will sometimes have great difficulty breathing and will experience repeated episodes of wheezing, chest tightness, shortness of breath, and coughing, the latter occurring mostly during the morning and night.