Overview
This lecture introduces the integumentary system, emphasizing its structure, functions, and importance in homeostasis, along with common diseases, disorders, and aging changes.
Introduction to the Integumentary System
- The integumentary system includes the skin and its accessory structures.
- It is the largest organ system, making up about 16% of body weight and covering 1.5 to 2 m².
- Skin protects internal organs and contributes to overall health and appearance.
Chapter Objectives
- Learn to describe the integumentary system and its role in maintaining homeostasis.
- Identify and describe the layers of the skin and their functions.
- Recognize the accessory structures of the skin and their purposes.
- Understand how the integumentary system changes with aging.
- Discuss common diseases, disorders, and injuries of the integumentary system.
- Explain treatments for these common issues.
Importance and Care of the Skin
- The skin requires daily care to stay healthy and continue protecting internal organs.
- The integumentary system is more than appearance; it is essential and dynamic.
Key Terms & Definitions
- Integumentary system — the organ system consisting of the skin and its accessory structures.
- Homeostasis — the process by which the body maintains a stable internal environment.
- Accessory structures — additional parts of the skin such as hair, nails, and glands.
Action Items / Next Steps
- Read the following sections: 5.1 Layers of the Skin, 5.2 Accessory Structures, 5.3 Functions, and 5.4 Diseases, Disorders, and Injuries.
- Review key terms related to the integumentary system.
- Prepare to discuss how the skin changes during aging and common integumentary system problems.