Upon completion of this learning program, you will be able to::

• Outline the body’s defenses and barriers.
• Explain the organization of the lymphatic system.
• Identify lymphatic organs and tissues.
• Explain the role of lymphatic organs.
• Identify the different types of immune cells.
• Explain the role of immune cells.

1. Getting Started
   1. Sound Check
   2. Disclaimer
   3. Welcome
   4. Navigation Instructions
2. Staying Focused
   1. Introduction
   2. Learning Objectives
3. Immunity And The Lymphatic System
   1. Overview
   2. Barriers To Infection
   3. Progress Check
   4. Lymphatic Tissue And Lymphocytes
      1. Side Note: Did You Know? – Historical Perspective
   5. Progress Check
   6. Lymph Circulation
   7. Lymphatic Capillaries
      1. Side Note: Digging Deeper – Non-immune Functions Of The Lymphatic System
4. Lymphatic Organs And Tissues
   1. Overview
   2. Primary Lymphatic Organs
      1. Thymus
      2. Bone Marrow
   3. Secondary Lymphatic Organs
      1. Lymph Nodes
      2. Progress Check
      3. Spleen
   4. Progress Check
   5. Secondary Lymphatic Tissues
5. The Immune Cell Lineage
   1. Overview
   2. Hematopoiesis
   3. Lymphoid Cells (B Cells, T Cells, Natural Killer Cells, And Dendritic Cells)
   4. Macrophages
      1. Side Note: Did You Know? – Historical Perspective
   5. Granulocytes (Neutrophils, Eosinophils, Basophils, Mast Cells)
      1. Side Note: Digging Deeper – Basophils And The Memory Response
6. Test Your Acquired Knowledge
   1. Summary
   2. Final Assessment
7. End Of Program
8. Glossary
9. References