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Introduction to the Human Body: Bones, Muscles, and Skin
Lesson 21.1: Organization of the Human Body
21.1.1 Levels of Organization
- Organs and Organ Systems
21.1.2 A Well-Oiled Machine
- Maintaining Homeostasis
- Failure of Homeostasis
Lesson 21.2: The Skeletal System
21.2.1 The Skeleton
21.2.2 Structure of Bones
21.2.3 Growth and Development of Bones
- Types of Joints
- Movable Joints
21.2.5 Skeletal System Problems
Lesson 21.3: The Muscular System
21.3.1 What are Muscles?
- Smooth Muscle
- Skeletal Muscle
- Cardiac Muscle
21.3.2 Skeletal Muscles
- Structure of Skeletal Muscles
- Skeletal Muscles and Bones
- Use It or Lose It
21.3.3 Muscle Contraction
- Structure of Muscle Fibers
- Sliding Filament Theory
- Muscles and Nerves
Lesson 21.4: The Integumentary System
21.4.1 The Skin
- Functions of the Skin
- Skin Problems
21.4.2 Nails and Hair
Pacing the Lessons
Use the Class Periods per Lesson table below as a guide for the time required to teach the lessons of this chapter.
Number of Class Periods
21.1 Organization of the Human Body
21.2 The Skeletal System
21.3 The Muscular System
21.4 The Integumentary System
- Class periods are assumed to be 60 minutes long.
See the following Web sites for appropriate laboratory activities:
1. This lab will teach students how to identify compact and spongy bone tissues and how to classify bones by shape. Quizzes are provided so students can test their comprehension as they work through the lab. (Lesson 21.2)
2. In this lab, students will investigate the effects of temperature and fatigue on muscle contractions, using themselves as study subjects. (Lesson 21.3)
These Web sites may also be helpful:
1. This URL has additional information about human body systems, as well as images of tissues and individual organ systems.
2. This URL links to lecture notes, Web pages, and PowerPoint presentations on the human body, including tissue types and body systems.
3. This Web site has several classroom activities on the skin.