biaxin Cough arises at irritation механои хеморецепторов drinks, throats, a trachea and bronchial tubes. Thus after a breath exhalation muscles are strongly reduced, intrachest and intrapulmonary pressure sharply raises (to 200 mm hg), the vocal crack opens, and air from respiratory ways under the big pressure is liberated outside and the irritating agent deletes. The kashlevoj reflex is the basic pulmonary reflex of a wandering nerve. levitra doxycycline hyclate 50 mg