Final answer:
The immune system and the integumentary system work together to protect the body from pathogens.
Step-by-step explanation:
The body systems that work together to protect the body from pathogens are the immune system and the integumentary system. The immune system is responsible for identifying and eliminating pathogens, while the integumentary system, which includes the skin and mucous membranes, acts as a physical barrier to prevent pathogens from entering the body. For example, the skin acts as a mechanical barrier and produces antimicrobial substances to kill pathogens, while the mucous membranes in the respiratory tract trap and remove pathogens.