Final answer:
Dressings and bandages have several important functions, including immobilization of the injury, prevention of contamination, protection from further injury, and control of external hemorrhage.
Step-by-step explanation:
The functions of dressings and bandages include immobilization of the injury, prevention of contamination, protection from further injury, and control of external hemorrhage. Dressings and bandages are used to support and stabilize injured body parts, reducing movement and allowing healing to occur. They also create a barrier that helps prevent the entry of harmful bacteria and other contaminants into the wound, reducing the risk of infection. Furthermore, dressings and bandages provide cushioning and compression to protect the injured area from additional trauma, and they can be used to apply pressure and control bleeding in cases of external hemorrhage.