Innate and adaptive Immunity Flashcards
The primary function of the immune system:
to fight and protect against foreign/invading pathogens.
In the process of immunity our body produces (2):
antibodies
memory cells
can pathogens be avoided?
No - air, water, food, etc.
Immunity is…
the body’s capacity to resist and combat infections.
what are the organs involved in immunity? (6)
Tonsils and adenoids
Thymus
lymph nodes
spleen
Peyer’s patches and appendix
Bone marrow
How do the tonsils and adenoids help?
filters to remove debris + antigens entering respiratory tract
How does the thymus help?
contains cells that mature into T lymphocytes (cell mediated response with specificity)
How do the lymph nodes help? (2)
filter to remove debris and antigens
fosters contact with t lymphocytes
How does the spleen help? (2)
to filter debris and antigens
fosters contact with t lymphocytes
how the peyer’s patch and appendix help?
filter for debris and antigen in the GI tract
How does bone marrow help?
has stem cells for B lymphocytes (production of antibodies)
What are the two types of immunity?
How many lines of defence do they produce?
Innate - 1+2
Adaptive - 3
What is innate immunity?
involves anatomical, mechanical and physiological barriers as well as cellular and inflammatory mammals.
These are activated in the presence of an antigen
What are the first line defences in innate immunity? (6)
Skin - thick and has sebaceous glands that produce seem to kill bacteria
Tears - lysosomes + antibacterial products
saliva
Cilia and mucus line the nasopharynx and trachea
ear wax - inhibits bacteria growth
stomach PH and natural flora in gut
What are the second line defences in innate immunity? (7)
granulocytes - (basophils+neutrophils+phagocytes)
mast cells
macrophages
dendritic cells
inflammation
natural killer cells
complements (plasma protein system)