1. As it is used in paragraph 3, the definition of cannula is a
Answer: D
The definition of cannula is a tube that carries medication.
A cannula is specifically defined as a tube that is used to deliver medication, in this case, insulin, directly into the body. This aligns with the context provided in paragraph 3, where the cannula is described as being inserted under the patient's skin to facilitate insulin delivery.
A) syringe used to give an injection.
A syringe is a device used to inject substances, but it does not serve the same function as a cannula. While syringes deliver medication directly, they are not tubes that remain in the body, which is the primary role of a cannula in insulin delivery systems.
B) vial containing medication.
A vial is a container that holds medication but does not actively deliver it. In contrast, a cannula is a delivery device, making this option incorrect as it does not match the definition provided in the extract.
C) machine that measures insulin.
This option refers to a device that assesses insulin levels, which is entirely different from the function of a cannula. A cannula does not measure insulin; it is a conduit for delivering it, thus rendering this choice inaccurate.
D) tube that carries medication.
This option accurately reflects the definition of a cannula, as it is indeed a tube designed to carry medication, specifically insulin in the context of diabetes management. This definition aligns perfectly with the description provided in paragraph 3.
Conclusion
The correct answer, option D, is definitively right because it accurately describes the function of a cannula as a tube that carries medication, specifically in the context of insulin delivery for diabetes management. All other options fail to capture this essence, either describing unrelated devices or mechanisms that do not align with how a cannula is utilized in medical practice.