Multiple choice

Clotting factors are released from:

  1. Leucocytes

  2. Erythrocytes

  3. Platelets

  4. Lymphocytes

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

Platelets (thrombocytes) adhere to damaged blood vessel walls and release clotting factors that initiate the coagulation cascade. While damaged tissues also release clotting factors, among the blood cells listed, platelets are the primary source.