It would be their immune system.
the integumentary system is the skin and the bodys first line of defense.
Neutrophils
its killer T cells
Cardiovascular
axons neurons , cells help protect the bodys defense system against infection ..auto-immune defiency ...also oxygen
This is your bodys natural defense to protect the eyes. It is a reflex.
Circulatory system
Barriers, The Inflammation Process, and Antibodies.
yes
I believe the bodies transportion system is the cardiovascular system :)
Respiratory
The body's most specific defense mechanism is the adaptive immune system, which includes T cells and B cells. These cells can recognize and target specific pathogens based on their unique antigens, providing a tailored response to each invader.