Chapter 18 Flashcards
A disease the can be passed to a person from another person, animal, or object
Communicable disease
Any condition that interferes with the proper functioning of the body or mind
Disease
Disease causing organisms that are so small the cam only be seen through a microscope
Pathogen
Condition that occurs when pathogens enter the body, multiply, and cause harm
Infection
The smallest pathogens
Virus
Tiny one-celled organisms
Bacteria
Organisms that are more complex than bacteria but cannot make their own food
Fungi
One-celled organisms that are more complex than bacteria
Protozoa
An organism, such as an insect, that transmits pathogens
Vector
Cleanliness
Hygiene
Combination of body defenses mad up of cells, tissues, and organs that fight off pathogens and disease
Immune system
Body’s ability to resist the germs that cause a particular disease
Immunity
Body’s response to injury or disease, resulting in a condition of swelling, pain, heat, and redness
Inflammation
Secondary circulatory system that helps the body fight pathogens and maintains its fluid balance
Lymphatic system
White blood cells in the lymphatic system
Lymphocytes