2. Syringes: Syringes are medical supplies used to deliver medication and inject fluids into the body. They come in different sizes, and their measurement is calibrated in milliliters. A syringe consists of two parts: the barrel, which holds the fluid, and the plunger, which pushes the fluid into the body. Syringes are critical for individuals who require regular medication. They are also used during blood tests and vaccinations.