Final answer:
The patient understands the instructions for self-administering subcutaneous injections when they state the belly is a good injection site. Subcutaneous injections go into the fatty layer under the skin, not deep muscles like the deltoid, and needles should be properly disposed of in a sharps container.
Step-by-step explanation:
The correct statement that indicates the patient understands the instructions for self-administering subcutaneous injections is: "My belly is a good place to give my injection." This is because the abdominal area is a common site for subcutaneous injections due to its accessibility and usually has enough subcutaneous tissue. Subcutaneous injections are not administered deep into muscles like the deltoid; instead, they are given into the fatty tissue just below the skin. Insulin, which is a hormone crucial for controlling blood glucose levels, is typically administered this way in people with diabetes. It is also important to note that a subcutaneous needle is usually short and fine, typically measuring about 5/16 to 1/2 inch in length. Furthermore, when disposing of needles and syringes, it is essential to use a proper sharps disposal container and not to throw them directly into the garbage for safety and health reasons.