What do mucus, saliva and tears have in common?
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Mucus, saliva and tears are all part of the immune system, which helps fight off foreign and harmful cells. ... Another similarity is that mucus,saliva, and tears are all produced by exocrine glands.
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All act as the physical barrier of immune system
Explanation:
- Mucus saliva and tears act as the first line of defense against the antigen and act as physical barrier of the immune system. These barriers resist microbes to enter the body.
- Saliva and tears contain an enzyme called lysozyme which kills the invading bacteria by destroying their cell wall. Mucus entraps the bacteria and contains some immune cells that kill this bacteria.
- So mucus, saliva, and tears protect us from the microbes and their infection by preventing them to enter the body.
Learn more about body defense:
- https://brainly.in/question/14484032
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