Category: Anatomy

With over 90% of intravenous medications typically bypassing arteries, understanding *why are some injections given directly into veins rather than arteries?* is crucial for appreciating fundamental medical safety and efficiency. The decision is not arbitrary but is grounded in critical anatomical and physiological differences between these two types of blood vessels.

The nasal cavity's large surface area, approximately 160 cm², offers a unique and rapid route for drug administration [1.6.2]. Understanding **where do drugs absorb in the nose** is crucial for developing effective therapies that can bypass first-pass metabolism and even target the brain directly [1.6.2, 1.3.6].