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What Do Saliva Tears And Nasal Mucus Have In Common

What Do Saliva Tears and Nasal Mucus Have in Common?

Two types of secretions that the human body produces are saliva and nasal mucus. They are similar in composition, protein, and viscosity, and are both used in a wide range of human functions. Learn more about their compositions and uses. Then, decide if they are similar to your own. If they are, you may need to try a different method.


All proteins in saliva, nasal mucus and sputum have similar chemical and genetic compositions. Mucins, or mucin-like proteins, give saliva its viscosity and thick consistency. These proteins form large, glycosylated combinations with other proteins in your body to maintain viscoelasticity and protect mucosal tissues against dehydration.

Saliva contains a-amylase, serum albumin, mucin, leukoctyes, and potassium thiocynatate. It also contains epithelial waste and toxins. Although all mucous secretions contain the same types of proteins, their compositions differ in different ways depending on the function. Saliva contains histatins, a protein that inhibits the release of histamine by mast cells.

Lysozyme was discovered in human nasal secretions in 1921. This protein inhibits the growth of bacteria in culture and breaks them apart. Lysozyme was later isolated from saliva, tears, mother’s milk, and viruses. It is found in human blood serum as well as domestic chicken egg whites. Its role in the immune system is still being confirmed by research. What are the proteins found in saliva and nasal mucus?


Understanding the biological functions of secretions can benefit health care. It’s important to distinguish between the various fluids produced by the human body, which have therapeutic and diagnostic uses. Saliva, tears, and nasal mucus are excellent tools for diagnosing diseases like multiple sclerosis, glaucoma, and dry eye. For their ability to fight infection, it is important that these fluids are viscose.

Mucus contains 95% water. Within three seconds, droplets can expand to hundreds of times the original volume. Cross-linking of mucus strands results in a sticky, elastic gel that acts as an effective physical barrier against most pathogens. Although the nasal cavities are protected from bacterial biofilms by the continuous flushing of mucus, small viruses can easily penetrate the mesh. Despite the fluid’s viscosity, the nasal cavities are relatively small, at about 150 square centimetres each. The airstream is turbulent, preventing a concentration of pollutants below 6.4 micrograms per cubic centimetre.


Saliva, tears, and nasal mucus are three body fluids that contribute to the overall health and function of the body. These fluids are made up of proteins with similar genetic makeup and help to protect mucous membranes and keep them viscoelastic. The proteins in the fluids also help clear the body of bacteria. The composition of saliva, tears, and nasal mucus varies widely between individuals, and the differences are quite striking.

Experiments involving microbes other that the nasal coccus are the best way to demonstrate the antibacterial activity of human secretions. As shown in fig. 2 cultures of faecal streptococci (cultures) were inactivated by tears, resulting is scattered colonies. Similar results were seen with fcecalis in inflammatory excudates of joint cavity. Further research is needed to determine the role that human salivary secretions play in the lysis and destruction of microorganisms.


The body’s natural protective barrier is nasal mucus and saliva tears. These substances can contain antibodies and other defense mechanisms. They can also help to prevent infection and reduce symptoms. This article will discuss some of the many uses of saliva tears and nasal mucus. Here, we’ll discuss some of these benefits and learn how they work. These substances are essential for survival and healthy living.

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