Multiple choice

Pus is a mixture of

  1. bacteria

  2. leucocytes

  3. dead tissue

  4. all of these

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pus is indeed a mixture of all three components. During infection, white blood cells (leucocytes) die at the site along with dead tissue cells. Bacteria causing the infection are also present. Pus forms from this accumulation of dead leukocytes, tissue debris, bacteria, and fluid. Each component alone is incomplete.