A tax expenditure program is government spending through the tax code. Tax expenditures alter the horizontal and vertical equity of the basic tax system by allowing exemptions, deductions, or credits to select groups or specific activities.
Aspiration may occur under several circumstances. 1  Before the swallowing reflex is triggered, when the airway has not elevated or closed. 2  During the swallowing if the laryngeal valves are not functioning adequately. 3  After the swallow when the larynx lowers and opens for inhalation.
Medicine. 1  Aspiration pneumonia, a lung infection caused by pulmonary aspiration. 2  Aspiration thrombectomy, embolectomy where a thrombus is removed by suction. 3  Needle aspiration biopsy, a surgical procedure.  Pulmonary aspiration, the entry of secretions or foreign material into the trachea and lungs.