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 condition is most likely to create a vasoocclusive crisis in patients with sickle cell disease?

Hypertension

Hypothermia

Dehydration

Hyperhydration

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Verified step by step guidance

Understand the nature of sickle cell disease: Sickle cell disease is a genetic disorder that affects the shape of red blood cells, causing them to become rigid and sickle-shaped. This can lead to blockages in blood vessels, known as vasoocclusive crises.

Identify the factors that can trigger a vasoocclusive crisis: Conditions that increase the likelihood of red blood cells sticking together or becoming more rigid can trigger a vasoocclusive crisis.

Analyze the options provided: Hypertension, hypothermia, dehydration, and hyperhydration are the conditions listed. Consider how each might affect blood viscosity and red blood cell behavior.

Focus on dehydration: Dehydration reduces the volume of plasma in the blood, increasing blood viscosity and the likelihood of sickle cells clumping together, which can lead to blockages in blood vessels.

Conclude why dehydration is the correct answer: Dehydration is most likely to create a vasoocclusive crisis because it exacerbates the sickling of red blood cells and increases the risk of blockages in the blood vessels.