Chapter 4.3 Introducing Diseases

___ are the tiniest pathogens

Diseases caused by pathogens are called ___ diseases

____ diseases are not caused by pathogens

____ diseases are the ones that a person is born with

_____, which is caused by the human immunodeficiency virus (HIV), attacks the immune system and prevents the body from fighting pathogens

____ are the most common diseases affecting the immune system

____ are substances that a body reacts to

The leading cause of death in the US is _____ disease which affects the heart or blood vessels

a ____ ____ occurs when the coronary arteries become blocked

_____ is a build up of fatty deposits in any of the body’s arteries that eventually prevents the flow of blood

______ ____ disease, which is atherosclerosis of the coronary arteries, is a major cause of heart attack

_____ occur when the heart beats abnormally

_____, which can attack any part of the body, occurs when some cells begin to divide and grow at an abnormally fast pace and take over the nutrients that normal cells need

As the abnormal cells multiply and spread, a lump of cancerous tissue called a _____ ____ develops. _____ ___s can spread to other parts of the body.

The process when the malignant tumors spread to other parts of the body is called ____

____ is a treatment using chemicals or drugs to destroy the cancerous cells