MEDICAL
LUNGS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is TRUE regarding RESISTANCE? Select all that apply
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The greater the resistance to airflow the slower the flow
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If we increase the radius, the resistance decrease
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Diameter of the bronchioles regulates the resistance
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None of the above
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Explanation:
Detailed explanation-1: -For example, in asthma attacks the bronchioles spasm and constrict, which increases resistance. Emphysema also increases airway resistance because the lung tissue becomes too pliable and it the airways become more difficult to hold open by the flow of air.
Detailed explanation-2: -The bronchioles change diameter to either increase or reduce air flow. An increase in diameter is called bronchodilation and is stimulated by either epinephrine or sympathetic nerves to increase air flow.
There is 1 question to complete.