A disease of the upper respiratory system caused by a virus.

The first sign of an illness is usually a _____ or a raised body temperature of above 98.6 F.

Chemicals made by the body that help destroy harmful microbes are _____.

What kind of blood cells help the body fight diseases?

A(n) _____ provides an environment in which microbes can live an reproduce.

A _____ is made from dead or weakened microbes that protect the body against a disease.

An indication of a disease is a _____.

_____ are medicines that can kill bacteria.

Which may be the cause of a noncommunicable disease?

What is the first line of defense in preventing disease causing microbes from entering your body?

All of the parts and functions of your body that fight disease make up your body's _____.

Communicable diseases begin with a(n) _____ period before symptoms appear.

Communicable diseases are at the _____ period when the major symptoms are present.

Communicable diseases are at the _____ period when recovering.

Microbes are carried into the air when an infected person _____.

_____ is protection against or the ability to fight a disease.

Athlete's foot is caused by a _____.

A disease that lasts for a long time or comes back again and again is _____.

This happens when the blood flow to the heart is blocked.

This happens when blood flow to the brain is blocked.

This is a chronic disease in which air passages in the lungs become narrow.

This happens when the immune system responds to certain substances as harmful even though they may not be harmful.

A disease in which cells multiply in ways that are not normal.

Most cancer cells form from growths called _____.

The leading cause of death in the United States is _____.

Eating properly, exercising, using sunscreen, and not smoking can all lower your risk of developing a _____ disease.

A disease that is caused by microbes and can spread from persons to person, animals, or objects.

A disease that can not spread from one living thing to another.

The environment where microbes live and reproduce.