People with asthma may experience difficulty breathing due to inflammation, or swelling, of the inner surfaces of their airways (the passageways by which air reaches the lungs). This inflammation makes the passageways sensitive to further irritation. Exposure to substances in the air such as pollen or smoke may then trigger an asthma attack. During an attack, the muscles around the airways contract, narrowing the space through which oxygen can pass. This can prevent oxygen from entering or exiting the lungs properly. Possible symptoms during an attack include shortness of breath, coughing, wheezing and difficulty breathing.Which organisational structure does this text primarily use?

Which is NOT a symptom of asthma? aA. Shortness of breath B. Whistling sound C. Coughing and wheezing D. Back pain bBack pain cCoughing and wheezing dWhistling sound

Symptoms and signs of a severe asthma attack are:Select 2 correct answers.  Moderate to loud wheeze Gasping for breath (may have little or no wheeze due to little movement of air) Little or no improvement after using “reliever” medication A dry, irritating, persistent cough, particularly at night, early morning, with exercise or activity

Which of the following infections does not affect a structure in the respiratory tract? Group of answer choiceslaryngitisbronchitisstrep throatotitis mediatonsilitis

What is/are the main cause(s) of asthma attacks in the dental office.Group of answer choicesIllnessMedicationsAllergensAnxiety

In lung diseases like asthma, emphysema, and chronic bronchitis, air cannot flow freely through the airways, thus these are called pulmonary disorders.