phagocytes

• phagocytosis (6 points)

  1 phagocytes leave the blood through the capillary walls and enter the tissue that is being attacked

  2. the cell membrane and cytoplasm of the phagocyte surrounds the pathogen

  3. the pathogen is engulfed

  4. the pathogen is digested my lytic enzymes

  5. useful substances are absorbed and the waste substances are released via exocytosis

  6. the phagocytes can continue to engulf more pathogens
• phagocytosis is

  non specific
• lymphocytes produce..

  antitoxins to counteract/ neutralise the toxins that the pathogens release
• lymphocytes are..

  specific as the antitoxins are specific to particular toxins
• lymphocytes have…

  antibodies on their surface which bind to specific antigens on the surface of pathogens and produces the antibody in vast quantities