Vital role played by immune system: protects our body from foreign insults like, germs, cell changes
What is the immune system made up off ?-----well, various organs, cells, and proteins complete our immune system
Enlightening the task of the immune system:
- Fight harmful foreign substances to our body
- To fight disease-causing germs - bacteria, viruses, parasites or fungi,
- To remove disease-causing germs from the body
- Recognize and neutralize certain changes in our body for example cancer cells.
How is our immune system activated?
- activated by a antigens.
- Certain examples of antigens: presented in form of proteins or enzyme activators by bacteria, fungi, viruses.
- antigens are key for lock on special receptors in immune cells structure (immune system cells),
- this allows cascade of crosstalk triggering messengers in body which act as alarm
- alarming state for contact of body with a disease-causing germ for the first time,- primary immunity
- following this it usually stores information about this first time recognition of germ to antigen in human body and how the fight was
- once same germ species come in contact again
- immunes system recalls its memory recognizes the germ straight away and kill it faster – secondary immunity
- do you know? That our body has proteins on surface but not all are antigen and thus they don’t kill themselves
- Neither these proteins can trigger immune system own its own against our body cell
- Still sometimes the immune system make mistakes
- mistakenly thinking that the body's own cells are foreign cell
- immune system get program and attacks healthy, harmless cells in the body- autoimmune response.