What does "Viscosity" measure in fluids?

Viscosity measures the resistance to flow of a liquid, indicating how thick or thin a fluid is. High viscosity means that a fluid flows less easily, like honey, while low viscosity allows a fluid to flow more freely, like water. Understanding viscosity is crucial in medication administration, as it affects the ease of injecting a medication and how it moves within the body. For example, highly viscous medications may require specific syringes or techniques to ensure proper administration, which underscores the importance of being aware of a fluid’s viscosity in a healthcare setting.