B6.1/B6.2/B6.3 - Vaccinations and medicines of the past Flashcards
memory cells
-remember the specific antibody used to fight specific pathogen
-so when you body come in contact with the same pathogen
-these memory ells can make antibodies quickly before you get sick
vaccine
made of dead/inactive pathogen
-stimulates body’s immune system to invaders
-helps build immunity through memory cells
herd immunity
a large proportion of the population is immune to the disease
-spread of pathogen is reduced
painkillers
relieve symptoms
-do not kill infections
eg of painkillers
-paracetamol
-aspirin
antibiotics
-cures bacterial diseases
-works inside your body without harming body cells
eg of antibiotics
penicillin
why can’t antibiotics kill viruses
-viruses reproduce inside you cells and change their DNA
-difficult to find a strong enough drug that will kill virus without harming body cells
antibiotic resistant bacteria
-means that bacterial infections are becoming harder to cure
-not having the same effect as before
digitalis
extracted from foxgloves
-strengthens heart beat
aspirin
-extracted from willowbark
-painkiller
How was antibiotics discovered
-Fleming was growing bacteria and left cultures unsealed for a while
-he saw mould growing on cultures
-he saw a ring of clear around the region of some bacteria
-he called the substance that killed that bacteria penicillin
penicillium mould
produced substance that killed bacteria
zone of inhibition
ring of clear around the region of some bacteria
-shows bacteria have been killed there
What did Chain and Florey discover
they extracted penicillin
and gave it to their dying patient who proved it worked
