Immune Ch18

What organ is not a part of the immune system?

• Spleen

• Bones

• Hypothalamus

• Thymus

Kills tumor cells and virally infected cells

Large cells whose main role is phagocytosis

Have histamine granules that are important in allergic reactions

Are associated with parasitic infections

Responsible for the adaptive immune system and can recognize specific pathogens

Antigen presenting WBC that matures into macrophages and has one nucleus

Natural killer cells are

• the smallest of the white blood cells

• a parasite that inserts its own DNA into a host cell to reproduce

• cells with cytoplasmic extensions that grab foreign material

• large, granular lymphocytes

• another name for reticular cells

Lymphocytes that produce antibodies and remembers antigens to prepare future antibodies

• T-lymphocytes

• B-lymphocytes

• Neutrophils

• Natural Killer Cells

• Lymphoids

The thymus

• grows throughout your life

• is only present in infants

• begins to shrink after puberty

• is not technically part of the lymphatic system

• has no known purpose