TOPIC: Immunity AIM: What is immunity?. Topic: Immunity Aim: How does the immune system fight...

TOPIC: ImmunityAIM: What is immunity?

Topic: ImmunityAim: How does the immune system fight disease?Do Now: How do antibodies help to protect the body?

AIDS •Acquired Immune Deficiency Syndrome

•Infectious disease

•Caused by HIV (Human immunodeficiency virus)

Damages immune system by destroying T cells (body can’t fight off pathogens)

How is HIV transmitted?

1. Contact with infected blood

2. Sharing intravenous needles

3. Sexual contact4. Motherfetus

Allergies •An immune response or reaction to substances you are allergic (sensitive) to

•Allergen = what you are allergic to

•(pollen, dust, etc)

•Histamines produced(chemicals released by cells that cause symptoms)

Topic: ImmunityAim: How does the immune system fight disease?Do Now: 1.Explain 2 differences between an infectious and noninfectious disease. 2.Give an example of each.

•How many of you have had the Chicken Pox?•Why is it called the chicken pox?•The term "chicken pox" comes from the Old English term "gican pox," which referred to an itching pox, not because people believed the illness was caused by chickens.•The specks that appear looked as though the skin was pecked by chickens.•The disease was named after chick peas, from a supposed similarity in size of the seed to the rash.•

Immunity•Ability to resist infection

2 types of Immunity

1. ActiveImmunity

•Produce your own antibodies

•(permanent)

•You receive active immunity by:

•a. Contact with pathogen

•b. Receiving vaccination =•Injection of weak/dead pathogen

•How does a vaccine work?

•A. Vaccine injected

•B. WBC’s detect antigen & multiply

•C. Antibodies & memory cells made

•D. Antibodies help fight pathogen

•E. Memory cells remain•(Pathogen enters memory cells quickly make antibodies)

2. Passive

Immunity

•Temporary immunity

•Receive antibodies from another

•Example = mother to child in womb & during breastfeeding

Review: 1. Explain one difference between active

and passive immunity?

2. How does a person acquire active immunity to a specific disease?

3. What is a vaccine?

4. Give an example of someone acquiring passive immunity.

Video Review: 1. What does immunity mean?2. Identify 2 ways you can become immune to

some diseases?3. What is a vaccine made of?4. How does the body react to a vaccine?5. What organ system does the polio virus

affect?6. How does the polio virus affect the body?7. When did Jonas Salk create the polio

vaccine?8. What are some of the diseases we have

vaccines for today?

TOPIC: Transport & ImmunityAIM: ReviewDO NOW:1. Which side of your heart pumps oxygenated

blood?2. To where will this blood be sent to?3. Which blood vessel carries deoxygenated

blood back to the right side of the heart?4. What is the job of your white blood cells?5. What part of the heart receives blood?6. What is the function of a valve?7. What kind of blood does the aorta carry? 8. Where does the aorta send blood to?

DO NOW:9. Label the heart below.

A.

B.C.

D.

E.

J.

I.

H.

G.

F.

aorta

Left atrium

valve

Left ventricle

septumLower vena cava

Right ventricle

valve

Right atrium

Upper vena cava

10. What physical barriers make up the body’s first line of defense?

11. Explain the difference between an inflammatory response and interferons.

12. Explain the difference between the 2 types of white blood cells?

13. There are 2 types of lymphocytes. Identify each one and explain their function.

14. Explain the differences between active and passive immunity.