Asthma--what type of tablets is contained by their emergency inhaler?

What type of medicine is surrounded by their emergency inhaler--I heard it have somethiing to do with relaxing the muslces contained by their airways, so to ease the constriction.Asthma--what type of tablets is contained by their emergency inhaler?
As someone who have put my niece in the hospital next to asthma, it is usually albuterol, which is an anti-inflammatory and opens up the bronchial tubes contained by the lungs.
albuterol
Most inhalers have albuterol contained by them which is a bronchodilator which helps the airways to relax to provide for more nouns exchange.
ventolin/albuterol
it does help the muscles relax they sometimes use it on pregnant mothers too to serve them relax
It is usually Albuterol Sulfate. This is a beta-2 bronchodilator and helps to friendly the constricted airways by relaxing the smooth muscles of the lungs. When you have trouble breathing the breathing tubes of the lungs swell up and the solely place that they have to run is inward. This medicine open them. It starts to work in contact and works up to four hours.