Term
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Definition
| A person who has an unbalanced diet |
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Term
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Definition
a balance of all the right foods
-carbs
-proteins
-fats
-fibre
-viatmins
-minerals
-water |
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Term
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Definition
| th eamount of energy needed to peform chemical reactions |
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Term
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Definition
| made in liver and found in blood |
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Term
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Definition
microorganisms that cause infectious diseases
-bacteria
-virus |
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Term
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Definition
help defend against pathogens by
-ingesting pathogens
-producing antitoxins to neutralise toxins
-producing antibodies |
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Term
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Definition
are very small produce rapidly, may produce toxins that make you feel ill
ILLNESSES:
-tetanus
-cholera |
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Term
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Definition
Smaller than bacteria
produce rapidly once inside living cells damaging the cell
may produce toxins that make you feel ill
ILLNESSES:
colds
flus
measles
polio |
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Term
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Definition
| white blood cells are sensitised to pathogen and can produce antibosy quickly if it infects body again |
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Term
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Definition
| Small amounts of inactive pathogens injected into the body, white blood cells produce antibodies to destroy pathogen. You then have an acquired immunitity to pathogen. |
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Term
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Definition
e.g penicilin
They kill the infective bacterial pathogens |
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Term
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Definition
| Local out-break of a disease |
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Term
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Definition
Global out-break of a disease
e.g Swine flu |
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Term
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Definition
e.g MRSA
Bacteria developing resistance to antibiotics as a result of natural selection |
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Term
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Definition
1. Pathogen mutates producing new strain
2. New strain may be resistant to antibiotics
3. The new resistant strain spread rapidly because we are not immune to it and no effective treatment |
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Term
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Definition
| Allows us to react to surroundings and coordinate behaviour |
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Term
| Nervous System 2 Consist of? |
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Definition
Consists
- of the Brain
- Spinal cord
- Nerves (neurons)
- Receptors |
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Term
| Nervous system in a nutshell |
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Definition
| Information from receptors in your sense organs passes along neurons to CNS (brain & spinal). The CNS cordinates response by sending instructions to effectors |
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Term
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Definition
Muscles or glands
Muscles:respond respond by contracting.
Glands: respond by releasing chemical substances (hormones) |
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Term
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Definition
Cells found in sense organs.
e.g eyes, ears, nose |
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Term
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Definition
Changes in your environment
e.g loud music |
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Term
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Definition
| Carry impulses from receptors to CNS |
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Term
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Definition
| Carry signals from CNS to effector |
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Term
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Definition
| Carry impulses from one part of the CNS to another |
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Term
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Definition
| Gap between neurons where chemical reaction happens |
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Term
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Definition
| design to prevent body from harm. Quick and automatic. *Bypass the brain* |
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