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

Cell Communication: Cytokines

Anatomy & Physiology

21. The Immune System

Cell Communication: Cytokines

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Multiple Choice

The "voices" of a cell, which carry messages, are:

Surface receptors.

Platelets.

Cytokines.

Antigens.

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Verified step by step guidance

Understand the context: The problem is asking about the 'voices' of a cell, which refers to the mechanisms by which cells communicate with each other.

Identify the options: The options given are surface receptors, platelets, cytokines, and antigens.

Clarify the role of each option: Surface receptors are proteins on the cell surface that receive signals. Platelets are involved in blood clotting. Cytokines are signaling molecules that mediate and regulate immunity, inflammation, and hematopoiesis. Antigens are substances that induce an immune response.

Focus on cytokines: Cytokines are often referred to as the 'voices' of the cell because they are crucial in cell signaling, allowing cells to communicate and coordinate responses.

Conclude the reasoning: Based on the roles, cytokines are the correct answer as they are the primary signaling molecules that carry messages between cells.