Syllabus Diseases and Immunity Flashcards
what is pathogen
disease causing organism
what is a transmissible disease
disease in which the pathogen can be passed from one host to another
how can a pathogen be transmitted
- by direct contact including blood and other fluids
- indirectly including contaminated surfaces, food, animals and surfaces
how does your skin protect you from pathogens
skin forms a waterproof mechanical barrier
how do your nose hairs protect you from pathogens
ciliated cells sweep the mucus (that trap pathogen cells) move them away from your lungs
how do your white blood cells protect you from pathogens
they detect, engluf and destroy the pathogen
why is a clean water supply important for containing the spread of diseases
When people do not have access to clean water or have to rely on polluted water sources, they are prone to water-borne diseases
What is active immunity?
why is a clean water supply important for containing the spread of diseases
reduces the number of pathogens on surfaces and on parts of the body
what is cholera
disease caused by a bacterium which is transmitted in contaminated water
why is a clean water supply important for containing the spread of diseases?
When people do not have access to clean water or have to rely on polluted water sources, they are prone to water-borne diseases
