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 Inflammation

Anatomy & Physiology

21. The Immune System

Introduction to Inflammation

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Multiple Choice

Which of the following occurs during the inflammatory phase of healing?

Proliferation of fibroblasts and collagen deposition

Formation of a mature scar

Remodeling of tissue architecture

Vasodilation and increased capillary permeability

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Verified step by step guidance

Understand the phases of wound healing: The process of wound healing is divided into three main phases: the inflammatory phase, the proliferative phase, and the remodeling (or maturation) phase. Each phase has distinct cellular and molecular events.

Focus on the inflammatory phase: This phase occurs immediately after injury and lasts for about 2-5 days. It is characterized by the body's initial response to injury, aiming to prevent infection and prepare the wound for healing.

Identify key events in the inflammatory phase: During this phase, vasodilation occurs, which increases blood flow to the injured area. This is accompanied by increased capillary permeability, allowing immune cells, nutrients, and clotting factors to move into the tissue to combat pathogens and initiate repair.

Differentiate the inflammatory phase from other phases: The proliferative phase involves fibroblast proliferation and collagen deposition, while the remodeling phase focuses on tissue architecture and scar maturation. These events occur later in the healing process, not during the inflammatory phase.

Conclude that vasodilation and increased capillary permeability are hallmark features of the inflammatory phase, as they facilitate the delivery of essential components to the injury site for initial repair and defense.