Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

21. The Immune System

Introduction to the Immune System

Anatomy & Physiology

21. The Immune System

Introduction to the Immune System

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Multiple Choice

Which of the following is an example of an infectious disease that is not a communicable disease?

Tuberculosis

Tetanus

Influenza

Measles

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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.