BIOL 243 · The Lymphatic and Immune System · USC Upstate

Immune Walkthrough

How lymph moves, where immune cells live, and how your body fights germs fast (innate) and smart (adaptive). Go at your own pace. Nothing here is graded.

Speed

Think of it like this

Quick check

Wrong answers are fine here. Read why, then try again.

Dr. Akash Garg · BIOL 243 Human Anatomy & Physiology · Chapter 21, The Lymphatic and Immune System (OpenStax Anatomy & Physiology 2e) · Use the left and right arrow keys to move between steps. Practice next in the Immune Lab.
Diagrams are simplified and not to scale. Cells, proteins and viruses are drawn far larger than life and as cartoons, and processes that take hours to weeks are sped up so you can watch them. Antibody titer graphs show the general shape of a response, not real lab values.