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 Cells of the Immune System

Anatomy & Physiology

21. The Immune System

Introduction to Cells of the Immune System

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Multiple Choice

Which blood cells are primarily responsible for fighting infections?

Red blood cells

Erythrocytes

Platelets

Lymphocytes

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Verified step by step guidance

Understand the different types of blood cells and their functions: Red blood cells (erythrocytes) primarily carry oxygen, platelets are involved in blood clotting, and white blood cells are involved in immune responses.

Identify the specific type of white blood cells that are responsible for fighting infections. White blood cells include several types such as neutrophils, lymphocytes, monocytes, eosinophils, and basophils.

Focus on lymphocytes, which are a type of white blood cell. They play a crucial role in the immune system by recognizing and responding to pathogens like bacteria and viruses.

Lymphocytes are further divided into B cells, T cells, and natural killer (NK) cells. B cells produce antibodies, T cells destroy infected host cells, and NK cells attack virus-infected cells and tumors.

Conclude that lymphocytes are primarily responsible for fighting infections, as they are key players in the adaptive immune response, providing targeted and long-lasting defense against pathogens.