B2.6 Health & Disease Flashcards
Health is defined as being free from two types of diseases, what are these?
Being free from communicable and non communicable diseases
Define communicable disease
A disease passed from one organism to another to another
Define non communicable diseases
A disease that can’t be spread from one organism to another
List the 3 types of infection
Viral, Bacterial and Fungi
How is salmonella spread ?
Contaminated food
How can salmonella be prevented?
Cook food thoroughly
How to do you treat salmonella, TB and chlamydia?
Antibiotics
What spreads TB?
Airborne
How do you prevent TB?
BCG Vaccine
How is chlamydia spread?
Sexual contact
How do you prevent chlamydia?
Condoms
How is HV/AIDS spread?
Exchange of body fluids
Infected blood
How do you prevent AIDS/HIV?
Condom
Addicts not sharing a needle
How do you treat HIV/AIDS?
Antiviral drugs to slow progression
How is the cold and flu spread?
Airborne droplets
How do you prevent the cold and flu?
Good hygiene
Vaccine
How is HPV spread?
Sexual contact
How do you prevent HPV?
Vaccine
How is athletes foot spread?
Contact with surfaces
How do you prevent athletes foot?
Avoid direct contact
How do you treat athletes foot?
Antifungal cream and powder
How is potato blight spread?
Airborne spores which spread in humid warm conditions
How do you prevent potato blight?
Crop rotation
Spray with fungicide
What are pathogens?
Disease causing microbes
What do lymphocytes do?
Produce antibodies
What are antibodies to the pathogen?
Specific and complimentary
What happens when an antibody comes into contact with a pathogen?
It binds to them and the pathogens are imobilised
List the 3 things phagocytes do
Surround, engulf and digest pathogens in a process called phagocytosis
What is primary response?
The first time your body encounters a pathogen
What happens during primary response?
Your body takes time to produce correct antibodies
What is secondary response?
The second time your body encounters a pathogen
What happens during secondary response?
Lymphocytes quickly produce antibodies needed
What is active immunity?
When the body can produce antibodies in the long term
What is passive immunity?
Injection of antibodies
How does vaccination work?
Modified pathogen injected
Lymphocytes produce antibody and memory lymphocytes are made
What are antibiotics?
Chemicals produced by fungi which are used to kill or reduce the growth of bacteria
What is a super bug?
A bacteria resistant to antibiotics
List some procedures used to control super bugs
Finish antibiotic course
Medical staff should wear disposable clothing and wash hands regularly
Hospital visitors should wash hands
All spillages of body fluids should be cleaned immediately
List 3 safety precautions while working in a lab whilst working with microorganisms
No eating and drinking
Wear safety glasses
Wash hands before and after
Explain the aseptic technique
Sterilise all equipment
Heat metal loop in bunsen flame to sterlise
Remove lid of culture bottle - hold at angle to minimise microbes in the air
Replace lid to prevent contamination
Spread microbes over the afar in the Petri dish by scraping the loop over the surface
Reheat the metal loop to destroy any microbes on it
Seal pratri dish with tape and incubate at 25°C
Clean work surfaces and hands
Dispose of bacterial culture by autoclaving
Why should you incubate a petri dish at 25°C?
It allows the microbes to grow but not ones that can harm the human body
List 4 poor lifestyle factors that can contribute to certain conditions
Poor diet (Excess sugar and fat)
Lack of exercise
Overexposure to UV light
Missuse of drugs and alcohol
List 4 reasons why people drink
Socialise
Enjoy
Curiosity
Peer pressure
List 3 reasons for reducing alcohol intake
Education
Minimum alcohol unit pricing
Improved labelling
What disease can alcoholism and binge drinking cause?
Liver disease
What can drinking during pregnancy cause?
Foetal alcohol syndrome
Smoking cigarettes allows tar into your body, list 3 things that can cause
Cancer
Bronchitis
Emphysema
List 2 reasons why nicotine is bad
Addictive
Effects heart rate
What does carbon monoxide reduce?
Reduces Oxygen carrying capacity of the blood
Is the cell division in cancer controlled or uncontrolled?
Uncontrolled cell division
List the 2 types of cancerous tumours
Benign and Maligant
What is a benign cancer tumour ?
A tumour that is encapsulated and can’t spread
What is a maligant tumour?
A tumour that can spread
List 3 life style factors that affect the risk of developing cancer. (1 reduce, 2 increase. )
HPV Vaccine - reduces risk of developing cancer
Smoking - Increases risk of lung cancer
UV Radiation - increases risk of skin cancer
What is the name given to the process in which a phagocyte surrounds, engulfs and digests something?
Phagocytosis
What type of chemical treats bacterial diseases?
Anti-biotic
What type of organism produces anti-biotics?
Fungus/Fungi
What type of cancer can HPV lead to?
Cervical Cancer
Name the 3 types of microorganisms
Bacteria, Virus and Fungi
What are the 3 types of micro organisms?
Virus, Bacteria and Fungi
What type of microorganism is chlamydia, salmonella and tuberculosis?
Bacteria
What type of microorganism is HIV, the cold and flu and HPV?
Virus
What type of microorganism is athletes foot and potato blight?
Fungi