← Chapter 21
Anatomy & Physiology · Chapter 21
The Inflammatory Response
When tissue is damaged or infected, the body's second line launches
inflammation
— the reason a cut turns red, warm, swollen, and sore. Step through it.
Injury
Inflammation
the second line at work
The steps
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Four cardinal signs:
redness · heat · swelling · pain (
rubor, calor, tumor, dolor
).
📷 Reference image
A real labeled figure to compare with the interactive above.
The Inflammatory Response — OpenStax, CC BY 3.0 (via Wikimedia Commons)
