Multiple Choice
Which of these is a weakened or dead form of a pathogen that causes an immune response?
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21. The Immune System
Introduction to the Immune System
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Which organ system is primarily responsible for defending the body against pathogens?
A
Digestive system
B
Nervous system
C
Immune system
D
Respiratory system
Verified step by step guidance1
Begin by understanding the primary function of each organ system listed in the problem.
The digestive system is responsible for breaking down food and absorbing nutrients, not directly involved in defending against pathogens.
The nervous system is responsible for transmitting signals throughout the body and coordinating actions, not directly involved in pathogen defense.
The respiratory system is involved in gas exchange, providing oxygen to the body and removing carbon dioxide, not directly involved in pathogen defense.
The immune system is the organ system primarily responsible for defending the body against pathogens. It includes various cells, tissues, and organs that work together to identify and eliminate foreign invaders such as bacteria, viruses, and other harmful organisms.
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