1. Defense against disease
Our immune system

2. Physical and Chemical Defenses
Barrier
Physical
Chemical

3. Physical and chemical defense
Skin – physical
Cells are hard and with no gap
Dead cells fall off – pathogens go with them
Skin – chemical
Sweat – acids that kill bacteria
Mucus membranes - physical
Mucus traps pathogens and washes them away
Mucus membranes – chemical
Contain chemicals which destroy pathogens

4. Physical and chemical defense
Cilia – physical
Mucus traps dust, pathogens, foreign matter
Cilia push mucus up – coughing, blowing nose, and sneezing removes materials
Saliva and tears – physical
Trap and wash material away
Saliva and tears – chemical
Contain chemicals that attack pathogens

5. Respiratory cilia
Cilia in nose
Cilia in lungs
Cilia in trachea

6. Physical and chemical defense
Digestive system – physical
Normal movement of materials through system
Digestive system – chemical
Acids in stomach
Normal digestive bacteria produce substances which kill or harm organisms

7. Inflammation Helps protect the body
wbc produce antibodies to destroy pathogens
promotes healing of area

8. Inflammatory response

9. Inflammatory response

10. Defense against disease
Active immunity or acquired immunity
Protection a person develops during their lifetime from being immunized
Long-lived
May last a person’s lifetime
Natural immunity – born with
Passive immunity
Borrowed from another source
Mother to child during fetal development and from mother’s breast milk
Temporary lasting only a few weeks until a person builds active immunity

11. Immune system response
Using the two readings provided you are to create a concept mapping which clearly shows the components of the immune system and how they are linked together.
Using onenote create your concept mapping
Use headings from your readings as main ideas
look for definitions
There should be a definite flow from concept to concept

12. Common infectious diseases
Bacterial diseases

13. Strep throat symptoms Diagnosis Sore throat Swollen lymph glands
Headache
Fever
Diagnosis
Throat swab

14. Lyme disease Spread: bite of infected deer tick Symptoms Protection
Red rash at site of bite
Fever
Chills
Body aches
Protection
Long pants, shirts w/ long sleeves

15. Bacterial meningitis
Description: infection of fluid surrounding the brain
Symptoms
High fever
Vomiting
Headache
Stiff neck
Can cause serious illness and death

16. tuberculosis Highly contagious infection of the lungs
Spread by sneezes or coughs
Symptoms
Fatigue
Weight loss
Mild fever
Constant cough

17. treatment
Knowing which type of bacteria are causing the disease is important to which type of antibiotic the doctor will prescribe

18. Common infectious disease
Viral diseases

19. Common cold Group of symptoms caused by different viruses Symptoms
Sneezing and Sore throat
Runny nose
Fever and congestion
Spread by both indirect and direct contac

20. Influenza…..flu Viral infection of the upper respiratory system
Direct and indirect contact
Symptoms: high fever, sore throat, headache, cough
Prevention - immunization

21. pneumonia Serious infection of the lungs People at risk Elderly
People with heart and breathing problems

22. hepatitis Description Symptoms Types: a, b, c
Group of viruses that infect the liver
Symptoms
Fever, nausea, pain in abdomen, jaundice (yellowing of skin)
Types: a, b, c