Chapter 18

Question 1

Communicable disease

Answer 1

Disease that can be passed to a person from another person, animal, or object.

Question 2

Pathogens

Answer 2

Disease-causing organisms that are so small they can only be seen through a microscope.

Question 3

Infection

Answer 3

A condition that occurs when pathogens enter the body, multiply, and cause harm.

Question 4

Viruses

Answer 4

The smallest pathogens

Question 5

Bacteria

Answer 5

Tiny one cell organisms

Question 6

Fungi

Answer 6

Organisms that are more complex than bacteria but cannot make their own food.

Question 7

Protozoa

Answer 7

One celled organisms that are more complex than bacteria.

Question 8

Vector

Answer 8

An organism, such as an insect, that transmits pathogens

Question 9

Hygiene

Answer 9

Cleanliness

Question 10

Immune system

Answer 10

A combination of body defenses made up of the cells, tissues, and organs that fight off pathogens and disease.

Question 11

Immunity

Answer 11

Your body’s ability to resist the germs that cause a particular disease

Question 12

Inflammation

Answer 12

The body’s response to injury or disease, resulting in a condition of swelling, pain, heat, and redness

Question 13

Lymphatic system

Answer 13

A secondary circulatory system that helps the body fight pathogens and maintains its fluid balance

Question 14

Lymphocytes

Answer 14

The white blood cells in the lymphatic system

Question 15

Antigens

Answer 15

Any substance released by invading pathogens

Question 16

Antibodies

Answer 16

Proteins that attach to antigens, keeping them from harming the body

Question 17

Vaccine

Answer 17

A preparation of dead or weekend pathogens that causes the immune system to produce antibodies

Question 18

Contagious period

Answer 18

The length of time that a particular disease can be spread from person to person

Question 19

Mononucleosis

Answer 19

A viral disease characterized by a severe sore throat and swelling of the lymph glands in the neck and around the throat area

Question 20

Hepatitis

Answer 20

A viral disease of the liver characterized by yellowing of the skin and the whites of the eyes

Question 21

Tuberculosis

Answer 21

A bacterial disease that usually affects the lungs

Question 22

Strep throat

Answer 22

A sore throat caused by streptococcal bacteria

Question 23

Sexually transmitted diseases

Answer 23

Infections that are spread from person to person through sexual contact

Question 24

HIV

Answer 24

The virus that causes AIDS

Question 25

AIDS

Answer 25

A deadly disease that interferes with the bodies natural ability to fight infection

Question 26

Disease

Answer 26

Any condition that interferes with the proper functioning of the body or mind.

Question 27

Pneumonia

Answer 27

A serious inflammation of the lungs

Question 28

Opportunistic infection

Answer 28

An infection that rarely occurs in a healthy person

Question 29

Carrier

Answer 29

A person who appears healthy but is infected with HIV and can pass it to others