PATHOLOGY MCQ
NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Constricts bronchi and bronchioles
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sympathetic
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parasympathetic
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -The parasympathetic system causes bronchoconstriction, whereas the sympathetic nervous system stimulates bronchodilation.
Detailed explanation-2: -The increased sympathetic tone causes the relaxation of airway smooth muscle, which causes dilation of the bronchi and bronchioles, reducing airway resistance.
Detailed explanation-3: -In the lungs, parasympathetic stimulation of M3 receptors leads to bronchoconstriction. It also increases bronchial secretions.
There is 1 question to complete.