Immunity Flashcards
Which systems are involved in immunity?
- Lymphatic System
- Circulatory System
+ Bone Marrow
What does the lymphatic system carry from the circulatory system?
The plasma and white blood cells from the circulatory system.
What are MHC Markers?
(Major Histocompatibility Complex)
Specific antigens found on the surfaces of all cells.
How does the immune system differentiate foreign cells from ‘self’ cells?
by MHC markers on the surface of the cell.
(‘self’ markers)
Where can you find MHC-1 markers?
All cells, except red blood cells.
Where can you find MHC-2 markers?
On immunity cells (B-cells, T-cells, and some monocytes.)
What happens to cells lacking recognised MHC markers?
They attract an immune response.
What are the three types of pathogens?
- Bacteria
- Viruses
- Parasites
What is the first layer of immunity comprised of?
- Skin
- Cillia
- Secretions (mucous, sweat, etc)
What is a phagocyte?
White blood cells which engulf and destroy foreign cells.
What is the second layer of immunity comprised of?
- Phagocytes
- Natural Killer Cells
What is the third layer of immunity comprised of?
- Specific immunity
- B cells
- T cells
What are the types of immune cells?
- B (Plasma) cells
- T cells
What do B cells do?
Make antibodies.
What are the types of T cells?
- Helper
- Killer (Cytotoxic)
