Question

What do you understand by ‘local defense system’ of the body?

Answer 1

Defense system:

1. The overall resistance of our body against any pathogen is called the defense system.
2. The defense system in our body for fighting pathogens is of two types: the local defense system and the immune system.
3. The local defense system deals with the germs at their possible entry points.
4. For example:-

1. Protective mechanical barriers: Skin, hairs, mucus, etc.
2. Thrown out if entered: Coughing, sneezing, and vomiting.
3. Germ-killing secretions: Saliva, sweat, tears, hydrochloric acid, etc.
4. Germ-fighting white blood cells: Phagocytosis.