The Body's Defense System
WebQuest
WebQuest icon ImmuneQuest
Concept 1
Infectious diseases are caused by pathogens.
Concept 1 icon Online Activity 31.1    Investigate how diseases spread.
Concept 2
The human body has three lines of defense against infections.
Concept 2 icon Online Activity 31.2    Trigger an inflammatory response.
Concept 3
The immune system recognizes specific invaders.
Concept 3 icon Online Activity 31.3    Track an immune response.
Lab icon Lab 31 Online Companion    Detecting Disease
Concept 4
Vaccines stimulate the immune response.
Concept 4 icon Online Activity 31.4    Vaccinate a patient.
Concept 5
Disorders of the immune system are major health problems.
Concept 5 icon Online Activity 31.5    Generate an allergic reaction.
Science, Technology, & Society icon Science, Technology, & Society    Living Organ Donors
Chapter 31 Assessment Chapter Assessment icon Chapter 31 Assessment
Chapter text icon Chapter Text