B1
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- Created by: robyn16
- Created on: 18-01-14 12:51
What is being healthy?
being free from illness and disease
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What is being fit?
how well you can perform physical tasks
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What is a healthy blood pressure?
no higher than 135 and no lower than 80
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What are the side effects of high blood pressure?
heart disease, strokes, brain damage, burst veins
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What are the factors that effect blood pressure?
smoking, alcohol, stress, being fat
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How does nicotine effect blood pressure?
increases heart rate which means the heart contracts more
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What are ther causes of a heart attack?
thorombosis (blood clot) narrow arteries
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Name the 7 main part to a healthy diet?
Carbphydrates, Protein, Fat, Viamins, Minerals, Water, Fibre
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What are reason for diets variying?
Religious, Personal, Medical
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How do you calculate the Estimated Average daily Requirement (EAR) of protein?
Body mass X 0.6g = EAR
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What is a side effect of eating too little protein?
Kwashiorkor
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What is BMI? what does it do?
Body Mass Index- calculates if you are under,over, or average weight
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What is the differnece between Bengin and Malignant tumours?
Bengin- doesn't spread and isn't harmful Malignant- does spread and is very dangerous
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Identify 3 class A drugs?
Heroin, LSD, Cocaine
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What are the 5 drug classifications?
Stimulants, Depressents, Painkiller, Performance Enhancing and Hallucinogens
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What is the main effect of alcohol?
Relaxes nervoud system, dehydration, sleepyness
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What are for side effects of smoking?
Heart disease, Lung cancer, Low weight babies and emphysema (lung disease)
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What si the job of the cornea?
refracts light
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What is the job of the retina?
detects light
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How is long sighted vision treated?
Convex lens
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How is short sighted vision treated?
Concave lens
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What is bioncular vison?
When the eyes work together
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What are the 3 types of neurons in the CNS?
relay, sensory, motor
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What do sensory neaurons do?
Carry information from the receptors to the CNS
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What does a motor neuron do?
Carries information from the CNS to the muscle by electrical impulses
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What is homeostatis?
maintaining a constant internal environment
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What is negative feedback?
when homeostatis cannot work to the body's requirements
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What are temperature control mechanisms for when your too hot?
Hair lies flat, body sweats to cool down, blood vessels widen (VASODILATION)
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What are temperature control mechanisms for when your too cold?
Hairs stand on end to act as an isulating layer, little sweat is produced, blood vessels constrict (VASOCONSTRICTION), shiver
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How do we control blood sugar level?
Insulin is injected into the body
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what is type 1 diabeties?
pancreus produced little or no insulin
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What is type 2 diabeties?
a person becomes resistant to insulin
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What are auxins?
The hormone in the top of the plant (growth hormone)
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What does phototropic mean?
when the plant grows towards light
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What does geotropic mean?
When it grows towards gravity
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What are the 4 used of plant hormones?
Weed killer, rooting powder, fruit ripening, dormancy (stops soil being infertile)
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What are the 3 sources of genetic variation?
gamete, fertilisation, mutations
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How are our features determind?
genetically or enviromentally
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How is gender controlled?
by formation of chromosomes
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How are inherited disorders caused?
by faultt genes, recessive allele,
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How are faulty genes caused?
both parents must either carry or suffer from faulthy genes
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How are infectious diseases caused?
pathogens which are microorganisms such as fungi, bacteria, virusis or protozoa
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How does your immune system deal with infectious diseases?
white blood cells engulph and digest pathogen cells
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Other cards in this set
Card 2
Front
What is being fit?
Back
how well you can perform physical tasks
Card 3
Front
What is a healthy blood pressure?
Back
Card 4
Front
What are the side effects of high blood pressure?
Back
Card 5
Front
What are the factors that effect blood pressure?
Back
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