2.62: Understand How the Immune System Responds to Disease using White Blood Cells, illustrated by Phagocytes Ingesting Pathogens and Lymphocytes Releasing Antibodies Specific to the Pathogen

*PHAGOCYTES: White blood cell that engulfs and secretes digestive enzymes onto pathogens to remove them from the body

ADAPTATIONS OF PHAGOCYTES
SENSITIVE CELL SURFACE MEMBRANE	Phagocytes have sensitive cell surface membrane that detects and locates pathogens via chemical produced
DIGESTIVE ENZYMES IN CYTOPLASM	Phagocytes have digestive enzymes in cytoplasm to digestion and remove pathogen from body once engulfed
IRREGULAR SHAPED NUCLEUS	Phagocytes have irregularly shaped Nucleus to squeeze through narrow gaps in capillary walls, allowing them to digest and remove pathogen quickly

*LYMPHOCYTES: White blood cell that produces antibodies to deactivate antigens on the surface of pathogens, additionally producing memory cells that remain in immune system for quick response to same antigens

ADAPTATIONS OF LYMPHOCYTES
LARGE NUCLEUS	Lymphocytes have large Nucleus containing multiple copies of DNA to produce antibodies in large amounts, preventing spread of diseases and infections

IMMUNE SYSTEM RESPONSE TO DISEASE

LYMPHOCYTES	PHAGOCYTES
Diagram showing Response of Lymphocytes	Diagram showing Response of Lymphocytes
When Pathogen is detected, Lymphocyte will split into two cells One cell will produce Antibodies that will deactivate Antigens of Pathogens Other cell will be memory cell that remains in immune system so if same Pathogen is detected, same Antibodies can be produced in larger quantities quickly	Phagocytes has sensitive cell surface membrane detects and locates Pathogen via chemicals produced Once Pathogen is encountered, they will engulf and release digestive enzymes to digest and Pathogen Pathogen is removed from the body