Chapter 27: Communicable Diseases
Chapter 27: Communicable Diseases
7th Grade Health
A. What Causes Disease?
1. Diseases occur when ______ body functions are disrupted.
2. There are two types of disease.
a. _________ diseases- are NOT spread from one person to another. (ex. Cancer)
b. _________ diseases-are passed from one ______ thing to another by ________.
(germs that can cause diseases).
1. ______ basic kinds of pathogens: Viruses, ______, fungi, and ____ can cause disease.
B. Circle below whether it is a communicable or a non-communicable disease
Common Cold (Communicable/ Non Communicable)
Cancer (Communicable/ Non Communicable)
Drug Addiction (Communicable/ Non Communicable)
Diabetes (Communicable/ Non Communicable)
The Flu (Communicable/ Non Communicable)
Heart Disease (Communicable/ Non Communicable)
C. Ways Pathogens Can Be Passed.
1. Through the ______. (sneezing)
2. ____________ objects. (______/_____ on door)
3. Person to _______. (_____, shaking _____)
4. _______. (ex. Ringworm & Lyme disease)
5. _______ and _______. (bacteria, improper _______ or __________ of foods)
D. Ways to Control Pathogens
1. Pasteurization-use of ______ to kill bacteria. (____)
2. Vaccines & Immunity: ________ are substances that help your body develop to a disease.
a. When injected, they allow your body’s immune system to _____ a _______ against the disease.
1. _______ is resistance to a disease.
3. Antibiotics-substances that can ____ bacteria or _____ its _______.
a. _____ are _____ affected by antibiotics.
E. Your Body’s Defenses
1. _____, ______, ________, ___________ and ____________-pathogens get destroyed quickly by _________ and ________ digestion.
2. _____-Of the many layers of cells that create your skin, the outermost layers are dead, therefore the pathogen cannot find a live cell to infect.
a. Your also secrete oil onto your skin which contains chemicals that kill pathogens.
3. ________ System is an _____ of individual _______, ______ and ______ that work _____ to fight against __________.
4. If skin is _____, cut or ________, _______ may ____ your _____.
a. __________reacts to keep out as many __ __________.
1. _______ blood flow to the ______ area sends ______ that help create _____ to _____ the open _______.
b. ________ System is an _____ of individual _______, ______ and ______ that work _____ to fight against __________.
F. Three Types Of Cells In The Immune System (handout)
1. ____________: These cells _____ microorganisms or viruses that have entered.
2. __ Cells: Help _____ the immune system, helping to gather ______ (the pieces of ______) and _______ _______ T Cells which kill _____ cell _________ with the _________.
3. __ Cells: Make ________. These are _______ that ______ to specific ________ to _________ them.
a. ________ B Cells-it takes __ _______ to make ________ for a new pathogen.
1. This is ____ _____ to prevent _________, therefore the ______ time you are infected, you get _____.
b. Once ______, when that _______ ___________ enters the body _____, the ______ are sent ______ to ______ to it.
G. Fevers
1. When the _________ activate the ______ T Cells, they ____________ send a signal to the ______ to turn up the ______.
2. A _______ fever ______ you get _______ by _______ down the ________ of some _________.
3. Fevers also ____ the T & B Cells ______ faster.
4. ____ fevers can cause ____ and blood _____damage.
H. Challenges to the Immune System
1. ________ occur when the immune system ________ to _____ (ALLERGENS) that are _____ usually dangerous to the body.
a. Causes: Food, medicine, pollen, dust/dust mites, animal hair & dander, mold, grass, etc.
b. Symptoms: runny nose, itchy eyes, asthma,
Swollen _______, rash, hives, _________ and ______________.
2. ____________ ______ is when the _______ system attacks the _____ own ______.
a. The system ________ tell the ________ between _______ and some ____ _____.
b. Ex. Rheumatoid arthritis, Multiple Sclerosis, Type 1 Diabetes, Lupus.
3. ________ is ________ cell growth.
a. ___________ destroy this type of cell, however, sometimes the ____ ______ gets out of the ______ of the immune system.
b. Cancer ____ invade nearby _______.
c. Cancer ____ enter into the ___________ or __________ systems allowing it to _______ to _____ parts of the _____.
d. Cancer ______ _____ activities of the ______ invaded, often leading to _____.
1. Certain _______ or ____________ drugs can _____ the cancer ______ or _____ their ______.
4. (AIDS) Acquired Immune Deficiency Syndrome is caused by the Human Immunodeficiency Virus.
a. ____ affects the _______ system _______.
b. It _____ the _____ T Cells to ______ more ______, _________ the _____ in the process.
1. This means the ______ and ________ _______ be put to work by the T Cells.
c. Without the T Cells doing their job, the _______ system ______ attack _____ or other ________.
d. People with AIDS _______ usually die of AIDS, but from the _____ diseases that they are ______ to _______ off without a _______ working _______ _________.
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