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Keeping Healthy

Terms in this set (12)

being overweight or obese,
being underweight and defficiency diseases
what can a poor diet lead to?
diet, excercise, metabolic rate and cholesterol level
What affects a persons health?
the rate at which all the chemical reactions in your body's cells are carried out
What is metabolic rate?
the amount of activity/ excercise you do, the proportion of fat to muscle in your body and inherited factors
Name three things that affect a persons metabollic rate
it is made in your liver and found in your blood
Where is cholesterol made and found?
pathogens are microorganisms which cause infectious diseases, the main ones are bacteria and viruses
What are pathogens? Name two main types of pathogen
Ingest pathogens, produces antitoxins to neutralise the pathogens toxins and antibodies to destroy particular pathogens
What do white blood cells do to defend against pathogens?
A small amount of inactiv or dead pathogen is injected into your body. Your white blood cells produce antibodies to destroy the pathogen and you then have aquired immunity to the particular pathogen as the white blood cells are sensitised to it.
Describe a vaccination
antibiotics kill infective bacterial pathogens inside the body but they don't kill viruses as they arn't in fact alive to begin with. Also viruses reproduce inside making in hard to develop a drug without damaging the body own tissue
What do antibiotics do and what can't they kill?
when a pathogen mutates, producing a new strain. This strain may be resistant to antibiotics so it spreads rapidly as there is no treatment
When do antibiotic-resistant strains occur?
overuse of antibiotics and prescribing inappropriate antibiotics
What factors contribute to an increase in antibiotic-resistant strains?
Semmelweiss in the 1840s
Who proposed that good hygiene could prevent infectious dieases spreading?
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