IM1- overview of the immune system

what is the immune system and what’s its purpose 

its the system  that protects us from pathogens e.g. bacteria, fungi, parasites that are harmful and disease causing 

list all the different types of white blood cells/ leukocytes

• lymphocytes ( major type )

• monocytes

• neutrophils

• basophil

• monocyte

• macrophage

• phagocytes

• dendritic cells

• mast cells

• eosinophils

what are the key organ involved in the immune system/ contain immune cells

lymph nodes

spleen

bone marrow

what are granulocytes

neutrophils

basophils

eosinophils

what’s the role of the dendritic cells in the immune system

they act as a bridge between innate and adaptive immunity, they can endocytose and phagocytose the bacteria and carry them across to the t cells

what are the different types of lymphocytes

lymphocytes

t-lymphocytes

natural killer cells

what does a well functioning immune system do

• it is able to distinguish between good and harmful bacteria

• eliminate harmful pathogens quickly

• remember pathogens it encounters

what’s the difference between innate and adaptive immunity

whats an autoimmune disease

a condition where the immune system attacks healthy cells as it cannot distinguish between health and harmful

what is an allergy

a reaction to something that is non pathogenic, the immune system reacts to them as if they were

what happens when the immune system fails to recognise non self antigen

immune deficiency and medication is needed