communicable diseases Flashcards
what causes a communicable disease
pathogens which are micro-organisums
how does the body defend against communicable diseases in water
hydrochloric acid in stomach
how does the body defend against communicable diseases through direct contact?
skin which is a waterproof barrier
how does the body defend against communicable diseases in the air
hair and mucus in the nose trap particles that could contain a pathogen
if a pathogen gets past your defence system, what protects you next
white blood cells
what do white blood cells do to get rid of pathogens
engulf pathogens, produce antitoxins and antibodies
what is a bacteria
release toxins into the body
what is a virus
enter the cells and reproduce inside cells until the cell bursts and are very small
what is a fungi
passed through skin to skin contact or shared surfaces, they produce spores