Anticholinergics act by blocking muscarinic receptors in the smooth muscle of the airways and inhibiting vagal tone.
抗胆碱药作用于气道平滑肌上的特定毒蕈碱受体，以抑制迷走张力。
Airway smooth muscle (ASM), existing in the trachea and in the bronchial tree up to the terminal bronchioles, serves as an important structural effector tissue to regulate bronchomotor tone.
呼吸道平滑肌可见于气管至末梢细支气管中，它被认为是调节支气管运动张力的重要组织。
Airway smooth muscle (ASM), existing in the trachea and in the bronchial tree up to the terminal bronchioles, serves as an important structural effector tissue to regulate bronchomotor tone.
呼吸道平滑肌可见于气管至末梢细支气管中，它被认为是调节支气管运动张力的重要组织。
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