Disposable syringes are medical devices used to inject liquids into the body or withdraw fluids from it. They are typically made of plastic and come with a needle that is designed for single use. After the injection or withdrawal, the entire syringe is discarded to prevent contamination and the spread of infections. These syringes are commonly used in various settings, including hospitals, clinics, and at home for administering medications like insulin. The use of disposable syringes helps ensure safety and hygiene, as they eliminate the risk of reusing contaminated equipment.