13. 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.
In the context of paragraph 3, a cannula is described as being inserted under the patient's skin to deliver insulin from an insulin pump, which clearly defines it as a tube that facilitates the administration of medication.
A) syringe used to give an injection.
A syringe is a device used to inject substances, typically liquids, into the body, but it does not describe the function of a cannula. Cannulas are specifically designed to remain in place and deliver medication continuously, unlike syringes that are used for single injections.
B) vial containing medication.
A vial is a small container that holds liquid medication, but it does not provide a means of delivering that medication into the body. The cannula, however, serves as a conduit for delivering insulin from the pump directly into the bloodstream, which is not the function of a vial.
C) machine that measures insulin.
A machine that measures insulin would refer to a device like a blood glucose monitor or insulin pump, which is not relevant to the definition of a cannula. The cannula itself is a physical tube used for medication delivery, not a device that measures hormone levels.
D) tube that carries medication.
This option accurately reflects the function of a cannula as described in the extract. The cannula is inserted under the skin and acts as a tube to transport insulin from the pump to the patient, making this the correct definition.
Conclusion
The correct answer, option D, is definitively right because it directly aligns with the description of a cannula as a tube for medication delivery. The other options fail to capture this role, instead referring to different medical devices or containers that do not match the function of a cannula in diabetes management.