Question

Mention the advantages of local defence systems.

Answer 1

Hint: To answer this question, we need to understand how the local defence system works. The local defence system is an effective mechanism of our body that fights against foreign bodies and employs germ-killing antibodies at the site of entry of infectious germs.

Complete answer:
The local defence system combats germs at their potential entry points. Skin, hair, mucus, and other mechanical barriers serve as protective mechanical barriers. If the following is entered, it will be discarded: Coughing, sneezing, and vomiting are all symptoms. Saliva, sweat, tears, hydrochloric acid, and other germ-killing secretions.

The local defence system barriers our body by tackling germs at their possible entry points. The process of restricting the germs include:
- The majority of germs are thrown out as soon as they enter.
- They act as protective mechanical barriers.
- They recruit the germ-fighting WBCs at the spot of infection.
- The WBCs create and employ antibodies to fight against the infection thus improving the overall immunity of the body.
- The local defence system also secretes germ-killing fluids and substances.

Listed below are the advantages of the local defence systems:
- It starts its action instantaneously to minimize damage to the body.
- The local defence system is independent of any previous exposure to infections.
- It proves to be very effective against a wide range of potentially infectious diseases.

Note: Local defence systems of the human body are effective at a particular site in the body contrary to the general immune system which protects and affects the whole body. The local defence system is more important and productive against foreign germs entering our body.