1. p534

2. Examples of the major categories of
organisms that cause disease in humans.
Except for the helminths (parasitic
worms), pathogens are microorganisms
that can be seen only with the aid of a
microscope. (a) Viruses: common cold,
(b) Bacteria: syphilis, (c) Fungi: athlete’s
foot fungus, (d) Protozoa: Giardia lamblia,
(e) Helminths: tapeworm.
p536

3. Examples of the major categories of
organisms that cause disease in humans.
Except for the helminths (parasitic
worms), pathogens are microorganisms
that can be seen only with the aid of a
microscope. (a) Viruses: common cold,
(b) Bacteria: syphilis, (c) Fungi: athlete’s
foot fungus, (d) Protozoa: Giardia lamblia,
(e) Helminths: tapeworm.
p536

4. Examples of the major categories of
organisms that cause disease in humans.
Except for the helminths (parasitic
worms), pathogens are microorganisms
that can be seen only with the aid of a
microscope. (a) Viruses: common cold,
(b) Bacteria: syphilis, (c) Fungi: athlete’s
foot fungus, (d) Protozoa: Giardia lamblia,
(e) Helminths: tapeworm.
p536

5. Examples of the major categories of
organisms that cause disease in humans.
Except for the helminths (parasitic
worms), pathogens are microorganisms
that can be seen only with the aid of a
microscope. (a) Viruses: common cold,
(b) Bacteria: syphilis, (c) Fungi: athlete’s
foot fungus, (d) Protozoa: Giardia lamblia,
(e) Helminths: tapeworm.
p536

6. Examples of the major categories of
organisms that cause disease in humans.
Except for the helminths (parasitic
worms), pathogens are microorganisms
that can be seen only with the aid of a
microscope. (a) Viruses: common cold,
(b) Bacteria: syphilis, (c) Fungi: athlete’s
foot fungus, (d) Protozoa: Giardia lamblia,
(e) Helminths: tapeworm.
p536

7. Figure 16.1 The Human Lymphatic System and Its Functions
The lymphatic system helps filter impurities from the body.
Figure 16-1 p539

8. Figure 16.2 The Immune Response
Some T cells can kill infected body cells. B cells churn out antibodies to tag pathogens for destruction by macrophages
and other white blood cells.
Figure 16-2 p540

9. Table 16-1 p543

10. Figure 16.3 Recommended Adult Immunization Schedule, by Vaccine
and Age Group—United States, 2011
Figure 16-3 p544

11. Washing your hands
often with soap and
hot water for 15 to 20
seconds will help protect
you from germs.
When soap and water
are not available, you
can use alcohol-based
disposable hand wipes
or gel sanitizers. If
using gel, rub your
hands until the gel is
dry; the alcohol in the
gel kills the germs.
p546

12. Getting a tattoo or a
piercing can pose health
risks, including bacterial
infection and hepatitis.
p550

13. Getting a tattoo or a
piercing can pose health
risks, including bacterial
infection and hepatitis.
Figure 16-4 p554

14. Hospitals can be
dangerous places.
MRSA spreads from
patient to patient
when hand washing is
inadequate or when
gloves or equipment
are contaminated.
p555

15. Ticks are responsible
for the spread of Lyme
disease. If you spot a
tick, remove it as soon as
possible with tweezers
or small forceps. Put it in
a plastic bag or sealed
bottle and save it. If you
develop a rash or other
symptoms, take it with
you to the doctor.
p556

16. Although many people
try to protect themselves
by wearing face
masks, there is no
evidence that masks
lower the risk of infection
in open spaces.
p557

17. Table 16-2 p559