Vetinerary Assistant Practice Exam

Per os drugs are administered to the mouth, which is the primary route for oral medication. The term "per os" is a Latin phrase that translates to "by mouth." This method of administration is commonly used for both humans and animals to ensure that the medication enters the digestive system, allowing the drug to be absorbed into the bloodstream through the gastrointestinal tract.

When medications are given orally, it allows for convenient administration, especially for long-term treatments, as it can often be easier and less stressful for the animal compared to other routes, such as injections. This route is also typically associated with fewer complications related to administration, making it a preferred choice when possible.

In contrast, the other options represent different routes of administration that do not align with the definition of "per os." Administering drugs to the nose, skin, or ear would involve different techniques and may require specific formulations suitable for those routes. Thus, the correct answer accurately reflects the appropriate method for administering medications orally.