Download 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 noncommunicable 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 _______ _________.