8th grade ch. 5 sec. 4 noninfectious diseases

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Objectives: 1.What causes allergies? 2.How does diabetes affect the body? 3.What are the effects of cancer on the body?

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Page 1: 8th grade ch. 5 sec. 4 noninfectious diseases

Objectives:1.What causes allergies?2.How does diabetes affect the body?3.What are the effects of cancer on the body?

Page 2: 8th grade ch. 5 sec. 4 noninfectious diseases

noninfectious diseases• not spread from person to person

• not caused from microorganisms

• examples:

1. allergies

2. diabetes

3. cancer

Page 3: 8th grade ch. 5 sec. 4 noninfectious diseases

1. allergy1. allergy• immune immune system system overly overly sensitive to sensitive to foreign foreign substancesubstance

Page 4: 8th grade ch. 5 sec. 4 noninfectious diseases

allergen•substance that causes allergy

Page 5: 8th grade ch. 5 sec. 4 noninfectious diseases

examples of allergens

pollenpet danderpet dander

Pet dander are tiny flakes of dead skin from family pets. It can cause sneezing, congestion, even asthma. These flakes can be airborne, but more often nestle into carpets and furniture.

Page 6: 8th grade ch. 5 sec. 4 noninfectious diseases
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histamine• chemical responsible for allergy

symptoms:

–sneezing

–watery eyes

Page 8: 8th grade ch. 5 sec. 4 noninfectious diseases
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asthma• respiratory passages narrow significantly

• can be caused by inhaling allergens

Page 10: 8th grade ch. 5 sec. 4 noninfectious diseases

• pancreas fails to make enough insulin or body’s cells can’t use it properly

• high levels of glucose in blood

• glucose excreted in urine-body cells do not have enough glucose

2.

Page 11: 8th grade ch. 5 sec. 4 noninfectious diseases

insulin

• chemical that enables body cells to take in glucose from blood & use it for energy

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2 formsof diabetes

Type 1 Type 2

begins in childhoodor early

adulthood

more serious form

develops during

adulthood

Page 15: 8th grade ch. 5 sec. 4 noninfectious diseases

• cells multiply uncontrollably

• destroys healthy tissue

3. cancer

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oral cancer

Page 17: 8th grade ch. 5 sec. 4 noninfectious diseases

causes of cancer1. inherited characteristics

(heredity)

2.environmental factors

3.carcinogens• tar• UV light

Page 18: 8th grade ch. 5 sec. 4 noninfectious diseases

cancer treatments

surgery drugs radiation

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Before and after cancer surgery

Page 20: 8th grade ch. 5 sec. 4 noninfectious diseases

chemotherapy

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radiation therapy

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radiation therapy

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cancer prevention

avoid tobacco

protect skin from sunlight

low fat diet

regularmedical

checkups

fruits &

vegetables