Physiology MCQ - RespiratoryAlthough a special focus is on topics in neurobiology , high quality papers in respiratory molecular and cellular biology are also welcome, as are high-quality papers in traditional areas, such as mechanics of breathing; gas exchange and acid-base balance; respiration at rest and exercise; respiration in unusual conditions, like high or low pressure or changes of temperature, low ambient oxygen; embryonic and adult respiration; comparative respiratory physiology. Papers on clinical aspects, articles on original methods, as well as theoretical papers are also considered as long as they foster the understanding of respiratory physiology and pathophysiology. Benefits to authors We also provide many author benefits, such as free PDFs, a liberal copyright policy, special discounts on Elsevier publications and much more. Please click here for more information on our author services. Please see our Guide for Authors for information on article submission. If you require any further information or help, please visit our Support Center.
Respiratory System MCQs - NEET MBBS
A catheter is floated into the pulmonary artery, the balloon is inflated and the pulmonary wedge pressure is measured. The pulmonary wedge pressure is used clinically to monitor which of the following pressures? Left atrial pressure b. Left ventricular pressure c. Pulmonary artery diastolic pressure d. Pulmonary artery systolic pressure e. Systemic capillary pressure Q2.
During healthy pregnancy, pulmonary function, ventilatory pattern and gas exchange are affected through both biochemical and mechanical pathways, as summarised in figure 1. Flow diagram summarising the most important effects of biochemical left and mechanical right pregnancy-induced factors on pulmonary function, ventilatory pattern and gas exchange. During pregnancy, the physiological alteration of hormonal patterns is the main cause of ventilatory changes in respiratory function. Progesterone acts as trigger of the primary respiratory centre by increasing the sensitivity of the respiratory centre to carbon dioxide, as indicated by the steeper slope of the ventilation curve in response to alveolar carbon dioxide changes [ 6 ]. Progesterone alters the smooth muscle tone of the airways resulting in a bronchodilator effect. It also mediates hyperaemia and oedema of mucosal surfaces, causing nasal congestion.
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