Multiple Choice
In the context of homeostasis, which component acts as the second link in the chain of transmission, responsible for processing information and determining the response?
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21. The Immune System
Introduction to the Immune System
Multiple Choice
Which of the following is an example of an infectious disease that is not a communicable disease?
A
Tuberculosis
B
Tetanus
C
Influenza
D
Measles
Verified step by step guidance1
Understand the difference between infectious and communicable diseases. Infectious diseases are caused by pathogens such as bacteria, viruses, fungi, or parasites. Communicable diseases are infectious diseases that can be transmitted from one person to another.
Identify the characteristics of each disease listed. Tuberculosis, Influenza, and Measles are all communicable diseases because they can be spread from person to person through various means such as air, direct contact, or bodily fluids.
Consider Tetanus, which is caused by the bacterium Clostridium tetani. It is an infectious disease because it results from a bacterial infection, but it is not communicable because it cannot be spread from person to person. Instead, it is typically contracted through wounds contaminated with the bacterium.
Recognize that the key factor distinguishing Tetanus from the other diseases listed is its mode of transmission. Tetanus requires a specific environmental exposure (e.g., a wound contaminated with soil or feces containing the bacterium) rather than person-to-person transmission.
Conclude that Tetanus is an example of an infectious disease that is not communicable, as it does not spread between individuals but rather through environmental exposure.
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