How are medications administered through the inhaled route?

Medications administered through the inhaled route are specifically designed to be absorbed through the nose or lungs. This method allows the active ingredients of the medication to enter the respiratory system effectively. When inhaled, these medications can provide rapid onset of action, as they directly enter the bloodstream through the alveoli in the lungs. This is particularly beneficial for respiratory conditions, where direct delivery to the lungs can enhance the effectiveness of the treatment and minimize systemic side effects.

The other options describe different routes of administration that do not pertain to inhalation. For instance, absorption through the skin relates to transdermal delivery, while absorption through the oral cavity pertains to oral medications. Injection into the bloodstream refers to parenteral administration, which is a completely different method. By focusing on how inhalation targets the respiratory system for quick absorption, the understanding of this route's effectiveness becomes clear.