What is the gauge of the needle?

Study for the AALAS Laboratory Animal Technician Test. Enhance your knowledge with comprehensive questions and detailed explanations. Prepare effectively for your LAT certification exam!

Multiple Choice

What is the gauge of the needle?

Explanation:
Gauge refers to the bore size of the needle—the inner diameter of the hollow tube through which fluid flows. It is not about how long the needle is, its circumference, or where you inject. The gauge system works inversely: smaller numbers mean a thicker bore, while larger numbers mean a thinner bore. This choice matters for how easily fluid can flow (flow rate) and how much tissue trauma can occur, so you pick gauge based on the fluid’s viscosity, the injection route, and the animal size.

Gauge refers to the bore size of the needle—the inner diameter of the hollow tube through which fluid flows. It is not about how long the needle is, its circumference, or where you inject. The gauge system works inversely: smaller numbers mean a thicker bore, while larger numbers mean a thinner bore. This choice matters for how easily fluid can flow (flow rate) and how much tissue trauma can occur, so you pick gauge based on the fluid’s viscosity, the injection route, and the animal size.

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