Multiple Choice
The lymph nodes help protect the body by which of the following?
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41. Immune System
Immune System
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Which system is primarily responsible for protecting the body against pathogens such as bacteria and viruses?
A
Endocrine system
B
Immune system
C
Respiratory system
D
Digestive system
Verified step by step guidance1
Step 1: Begin by understanding the role of each system mentioned in the problem. The endocrine system is responsible for producing hormones that regulate various bodily functions, but it is not directly involved in protecting the body against pathogens.
Step 2: Consider the immune system. Its primary function is to defend the body against pathogens such as bacteria, viruses, and other harmful microorganisms. It includes components like white blood cells, antibodies, and lymphatic organs.
Step 3: Evaluate the respiratory system. While it plays a role in gas exchange and can trap some pathogens in mucus, its primary function is not to protect the body against pathogens.
Step 4: Assess the digestive system. It helps break down food and absorb nutrients, and while it has some protective mechanisms (like stomach acid killing bacteria), its main role is not immune defense.
Step 5: Conclude that the immune system is the correct answer because it is specifically designed to identify and eliminate pathogens, ensuring the body remains healthy.
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