Ans. The innate immune system id develop for the
defense against infection that once a pathogen attacks, going to be activated
immediately. There are many barriers included in the innate immune system that
from viruses, bacteria parasites, along with other particles try to reach out
to move within the body and making ability to spread around whole body. Inflammation,
complement and nonspecific cellular responses are included in innate system along
with general immune system. Gastrointestinal tract, the respiratory track,
skin, cilia, eyelashes and other parts of body with hair have become a barrier
physically in such process.
Mechanism of defense
includes sweat, tears, saliva, gastric acid, bile, mucous and secretions. By
increasing blood flow to the area, the response actively by the inflammation
brings immune cells to the site of an infection. Immune responses that marks pathogens
for destruction and create holes in the cell membrane of the pathogens are
known as complement