How Our Bodies Defend Against Disease Flashcards
what can bacteria and viruses do inside the body
reproduce rapidly
what do bacteria and viruses produce that makes us I’ll
toxins
in what three ways can white blood cells defend against pathogens
- ingesting the pathogen
- producing antibodies
- producing anti-toxins
what happens when someone is immune to a pathogen
the immune system has successfully defended against an attack by that pathogen and the T-memory cells can remember its specific shape. This means if the pathogen ever comes in contact with the body again, it can be destroyed easily
what did Semmelweis recognise
the importance of hand washing to prevent the spreading of some infectious diseases
how did Semmelweis reduced the number of deaths from disease
making sure all doctors washed their hands before examining patients
what do antibiotics cure
bacterial disease
name an antibiotic
penicillin
why can antibiotics not kill pathogens
because they live and reproduce inside cells
why have some strains of bacteria become resistant
because of overuse of antibiotics
what can mutations lead to
a whole new strain of pathogen/bacteria which leads to non effectiveness antibiotics etc
what are vaccines
an injected form of weakened or dead strain of pathogen, which stimulates white blood cells to produce antibodies to destroy it. This causes the White blood cells to remember the shape and therefore make the body immune to future infections
what do pathogens cause
infectious diseases
