Download Lecture II (PowerPoint) "Saliva and Disease Transmission"

Saliva & Disease
Transmission
Today’s Agenda:
(1) Journal Questions:
a. What is a virus?
b. Give an example of a common virus.
(2) Lecture II: Disease Transmission
(Saliva) & Your Immune System
“Types of Viruses.” (slide 16)
-Next topic: Bacteria/Monera
-Following topic: The Immune System
Next Exam covers circulatory system,
saliva, viruses, bacteria, and your
immune system
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Disease Transmission
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Disease Transmission
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Disease Transmission
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Disease Transmission
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Who Gives a Spit?
A. If your dog cuts or injures their
paw, they will most likely go off into a
corner, lie down and lick the wound.
B. So it must be healing for you to do
the same when you get a cut, right?
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C. Think about it: Dogs drink
from toilet bowls and lick
various anatomical parts, so
that doesn’t make it a good idea
for humans to lick their wounds.
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D. Some people think it’s
helpful to lick their wounds
because they’ve heard that
saliva is sterile, or a
disinfectant.
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E. The Contents of your Saliva:
(1) More than 600 types of bacteria
(2) 98% Water
(3) The other 2% is
[1] Mucous (secretions from nose)
[2] Enzymes
[3] Electrolytes (sodium, potassium)
[4] Antibacterial Compounds
[5] Opiorphin (Recently discovered
in mice (2011)
[6) Viruses and Fungi
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F. You have 3 Salivary
Glands:
(1) Parotid Gland
(2) Sublingual Gland
(3) Submandibular Gland
G. You produce saliva 24
hours a day.
-They secrete or ooze 2-4
pints of spit a day!
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H. What is saliva used for?
(1) Moistens Food
(2) Digest Starches
(3) Keeps membranes
moist (prevents them
from drying out)
(4) Assists taste buds
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I. What diseases are transmitted in
saliva?
(1) Common cold (bacterial)
(2) Flu (viral)
(3) Upper Respiratory Infection
(4) Meningitis
(5) Mononucleosis (Mono)
(6) Hepatitis B
(7) Cold Sores
(8) Molluscum contagiosum
(9) And much, much more…..
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I. What diseases are
transmitted in saliva?
-As of today (3/9/11) the
Centers of Disease
Control have over 2,500
search hits on saliva
transmitted diseases.
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J. Ways that you can transmit your
spit/saliva and possibly infect others:
(1) Coughing
(2) Sneezing
(3) Spitting
(4) Direct Contact
K. Always use proper hygiene and
appropriate sanitary protocols so as not
to infect others around you.
FREQUENTLY WASH YOUR HANDS!!!!
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L. Consequently, it would
not be wise for you to
lick your wounds.
M. Human bite wounds
have a high risk of
infection unless treated
with antibiotics.
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