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 Innate Immunity

Anatomy & Physiology

21. The Immune System

Introduction to Innate Immunity

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Multiple Choice

Which of the following cells is most commonly associated with a skin allergy as part of the innate immune response?

Mast cells

Neutrophils

Erythrocytes

Hepatocytes

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Verified step by step guidance

Understand the role of the innate immune response: The innate immune system is the body's first line of defense against pathogens and allergens. It includes physical barriers like the skin and specialized immune cells that respond quickly to threats.

Identify the function of mast cells: Mast cells are immune cells found in connective tissues, including the skin. They play a key role in allergic reactions by releasing histamine and other inflammatory mediators when activated by allergens.

Compare mast cells to neutrophils: Neutrophils are white blood cells that primarily target bacterial infections and are involved in phagocytosis. They are not typically associated with allergic responses in the skin.

Exclude erythrocytes and hepatocytes: Erythrocytes (red blood cells) are responsible for oxygen transport and do not play a role in immune responses. Hepatocytes are liver cells involved in metabolism and detoxification, not immunity.

Conclude that mast cells are the correct answer: Based on their role in releasing histamine and mediating allergic responses in the skin, mast cells are most commonly associated with skin allergies as part of the innate immune response.