Topics: Respiration, Immune System, Blood Cells Quiz
What do phagocytes do?
A. Engulf (surround) microbes and digest them.
B. Produce antibodies.
C. Release a toxin that kills pathogens.
Preview next quiz:
Why is the left wall of the heart have a thicker layer of muscle than the right side?
A. To stop the blood flowing backwards
B. To push the blood with more force at high pressure so it goes to all body cells.
C. To push the blood at high pressure to the lungs.