Final answer:
A PICC line is a type of intravenous catheter used for prolonged vascular access for delivering medications, nutrients, and other therapies.
Step-by-step explanation:
A peripherally inserted central catheter (PICC line) is a type of intravenous catheter. It is a long, flexible tube that is inserted into a peripheral vein, often in the arm, and advanced until the catheter's tip terminates in a large vein in the chest near the heart. This position allows for it to provide prolonged intravenous access. It can be used for delivering medications, nutrients, drawing blood, or for long-term intravenous therapy such as chemotherapy, among other uses. It does not measure blood pressure, conduct bone marrow biopsies, or measure respiratory rate.