Agents that increase volume or hydration of airway secretions are called

Question

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A mucoregulatory agent reduces mucus hypersecretion to normal levels.A mucolytic breaks down the structure of mucus,usually reducing viscosity and elasticity.Bronchodilators act to relax bronchial smooth muscle,reversing bronchospasm.Expectorants increase the volume or hydration of airway secretions,improving expectoration of respiratory secretions,usually by stimulation of bronchial gland output.

Agents That Increase Volume or Hydration of Airway Secretions Are