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Key Terms Airway resistance : Airway Resistance is a concept in respiratory physiology that describes the resistance of the respiratory tract to airflow during inspiration and expiration. Turbulent flow : Air with disorganized layers that has higher resistance. It is often located in areas where the airways branch or diverge.
EXAMPLES Airway resistance can change over time, especially during an asthma attack when the airways constricts causing an increase in airway resistance. Airway Resistance Airway resistance is the resistance to flow of air caused by friction with the airways, which includes the conducting zone for air, such as the trachea, bronchi and bronchioles.
Size of the Airway Resistance in an airway is inversely proportional to the radius of the airway. Flow of Air The air that flows through the lungs varies considerably in the properties of the flow of air. Authored by : Boundless. Provided by : Boundless.
Provided by : Wikipedia. Located at : en. Provided by : Wiktionary. Provided by : Wikibooks. Provided by : Boundless Learning. In answering a question like "which factors affect airway diameter", the trainee's bigger problem will not be coming up with factors but classifying them in a way which appears measured and thoughtful.
Which differences did they mean? Basically, it's higher. Airway resistance decreases markedly with growth from infancy to adulthood. Kaminsky, David A. Briscoe, William A. Nakagawa, Misa, et al. Factors which affect airway resistance. Previous chapter: Resistance of the respiratory system Next chapter: Measurement of respiratory resistance.
All SAQs related to this topic. All vivas related to this topic. Question 6 from the second paper of Question 23 from the second paper of Question 6 p. In summary: Factors which affect airway resistance Gas properties which affect the type of flow Gas density increased density leads to increased turbulence and hence increased resistance Gas viscosity increased viscosity promotes laminar flow and hence decreases resistance Factors which affect airway diameter Lung volume resistance decreases with higher volume Physiological variation in airway diameter Pathological conditions which affect airway diameter: Mechanical obstruction or compression Extrinsic, eg.
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