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

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

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Multiple Choice

What is the greatest hazard of using a humidifier when delivering oxygen to a patient?

Development of oxygen toxicity

Reduced oxygen concentration delivered to the patient

Dehydration of the respiratory tract

Increased risk of infection due to bacterial contamination

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Verified step by step guidance

Understand the purpose of a humidifier in oxygen delivery: A humidifier is used to add moisture to the oxygen being delivered to prevent dryness in the respiratory tract, which can occur when breathing in pure oxygen.

Recognize the potential hazards associated with humidifiers: While they help prevent dehydration of the respiratory tract, they can also create an environment conducive to bacterial growth if not properly maintained.

Analyze the options provided: Oxygen toxicity occurs due to prolonged exposure to high concentrations of oxygen, not directly related to humidifier use. Reduced oxygen concentration is not a typical hazard of humidifiers. Dehydration of the respiratory tract is prevented by the humidifier, not caused by it.

Focus on the correct answer: Increased risk of infection due to bacterial contamination is the greatest hazard because humidifiers can harbor bacteria if not cleaned and sterilized regularly, leading to potential respiratory infections.

Conclude with preventive measures: To minimize the risk of infection, ensure the humidifier is cleaned and disinfected frequently, and use sterile water to reduce bacterial contamination.