b5- communicable diseases Flashcards
1
Q
what are communicable diseases caused by?
A
microorganisms called pathogens
2
Q
what lines of defence do body’s have against pathogens?
A
the skin, the nose, the trachea, the bronchi, the stomach
3
Q
how do white blood cells defend against pathogens?
A
by ingesting them and making antibodies and antitoxins
