state four in which a body protect itself against diseases
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Answer:
Four ways in which the body protect itself against diseases is that:
- It produces antibodies. Antibodies help the body to fight microbes or the toxins (poisons) they produce. They do this by recognizing substances called antigens on the surface of the microbe, or in the chemicals they produce, which mark the microbe or toxin as being foreign. The antibodies then mark these antigens for destruction.
- White bloods cells are produced in the bone marrow. White blood cells are used to fight infections and diseases.
- The immune system responds by producing several substances and agents that are designed to attack the specific diseases.
- The digestive tract has a series of effective barriers, including stomach acid, pancreatic enzymes, bile, and intestinal secretions. These substances can kill bacteria or prevent them from multiplying.