B2 - Keeping Healthy

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  • Created by: cjulie11
  • Created on: 26-04-16 13:25
organisms that cause infectious diseases include...
bacteria and viruses
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why do michroorganisms reproduce so rapidly in the human body?
to produce large numbers as quickly as possible
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why do cells get damaged during an infection?
because the microorganisms produce toxins
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what do white blood cells do?
*destroy microorganisms by engulfing and digesting them *produce antibodies against antigens on their surface
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why do memory cells remain in the body?
so that antibodies can be produced much quicker and to develop animmunity
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what does a vaccine do?
contains a safe dose of a microorganism
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why do vaccines have a dose of a microorganism?
because it allows the person to develop an immunity and has quite a low risk
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why should a large proportion of a population be vaccinated?
because otherwise there would be an epidemic of people who were infected and it would be passed back and forth extremely easily
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what do antimicrobials do?
*kill or inhibit the growth of bacteria, fungis and viruses *include antibiotics which are used to kill bacteria
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why should antibiotics only be used when necessary and why should you insure a course is completed?
because bacteria and fungi can develop a resistance
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what does 'open label' mean?
a new drug is known by the researcher and the patient
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what does 'blind' mean?
the patients don't know who will be receiving the drug
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what does 'double blind'mean?
the researcher and patient don't know who is receiving the drug
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which side of the heart pumps to the lungs and which side to the body?
*left side pumps to the body *right side to the body
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why do heart attacks occur?
because fatty deposits block the blood supply to the heart
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what causes heart disease?
*lifestyle factors - poor diet, stress, smoking, misuse of drugs *genetic factors
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blood pressure is...
a measure of the pressure of blood on the artery wall
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how is blood pressure measured?
it is measured astwo numbers; the higher number is when the heart is contracting the other is when the heart is relaxed
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heart rate is recorded...
using the pulse beats per minute
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does high blood pressure increase or decrease the risk of heart disease?
it increases the risk of heart disease
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name a substance that *increases ADH secration *decreases ADH secration?
*ecstacy (MDMA) increases ADH secration *alcohol decreases ADH secration
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in what ways is water inputed into the body?
from drinks, food and respiration
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how is water lost?
from sweating, breathing, faeces and urine
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how do the kidneys respond to water concentration?
they respond to water concentration in the plasma by producing dilute or concentrated urine
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Other cards in this set

Card 2

Front

why do michroorganisms reproduce so rapidly in the human body?

Back

to produce large numbers as quickly as possible

Card 3

Front

why do cells get damaged during an infection?

Back

Preview of the front of card 3

Card 4

Front

what do white blood cells do?

Back

Preview of the front of card 4

Card 5

Front

why do memory cells remain in the body?

Back

Preview of the front of card 5
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