Which one of the following statements about oxygen-derived free radicals is incorrect?
Antigen presentation to T cells on first exposure to an inhaled foreign antigen usually occurs in which one of the following sites?
Which one of the following statements regarding chronic obstructive pulmonary disease (COPD) is correct?
Which one or more of the following statements regarding pneumonia is/are correct?
Which one or more of the following statements about the pulmonary circulation is/are correct?
Which one of the following is correct? TH2 cytokines are thought to be important in asthma because they:
Which one or more of the following statements regarding the electrocardiogram (ECG) is/are correct?
Which one or more of the following statements regarding cardiac myocyte contraction is/are correct?
Which one of the following is the best measure of cardiac contractility?
Which one or more of the following statements regarding autonomic control of cardiac contractility is/are correct?
Concerning individuals with the obstructive sleep apnoea syndrome (OSAS), which one or more of the following statements is/are correct?
Which one of the following promotes bronchodilation of the lower airways?
A 70 year old man who has been smoking one packet of cigarettes per day for fifty years, has shortness of breath with minimal exertion. Spirometry show a forced expiratory ratio of 0.4 with an FEV1 40 % of the predicted mean. What is the most likely mechanism for his dyspnoea?
In a person with asthma who has wheeze and dyspnoea several times per week, when exercising, which of the following is likely to be found?
Anti-arrhythmic drugs may act through which one or more of the following mechanisms?