TLS Online TPP Program

#Question id: 10962


A 24-year-old man came into the ER with a broken leg. A blood test was ordered and his WBC count was 22 × 10^3/μl. Five hours later, a second blood test resulted in values of 7 × 10^3/μl. What is the cause of the increased WBC count with the first test?

#7. System Physiology – Animal
  1. Increased production of WBC by the bone marrow
  2. Shift of WBCs from the marginated pool to the circulating pool
  3. Decreased destruction of WBCs
  4. Increased production of selectins