Immune system
Done by : Rowdha sambakh and Reem ali
What is The immune system?
It's the system that protects your body from the attack of the forgner cells or the bacteria.
What are the cells in the immune system ?
*phagocyte
*T cell
*B cell
*Antibodies
*complement proteins
*Interferon
What are the proteins in the immune system?
*Interferons prevent viruses from infecting healthy cells.
* Complement proteins weaken pathogen membranes
*Antibodies make pathogens ineffective.
External defenses against infection
The skin which is physical which produce sweat and oil to prevent pathogen from enter the body.
Internal defenses against infection
Internal - mucels membrane and Celia which trap microorganism
Inflammation
The body immune response against a pathogen (an infection)
Typs of white blood cells
*phagocyte is a white blood cell that destroys pathogens by surrounding and engulfing them.
*T cells kills infected cells
* B cells produce proteins that stop pathogens from infecting body cells.