Cannulae are slender tubes that are typically inserted into a body cavity or blood vessel. They are often used in medical procedures to deliver fluids or medications to the body. Synonyms for the word cannulae include catheter, tube, cannula, needle, and IV. These terms are often used interchangeably in medical settings and can refer to different types of tubes or needles depending on their use and location. Regardless of the specific terminology used, cannulae play an important role in modern medicine and are essential for delivering necessary treatments to patients in need.