interferon

Non-respiratory functions of respiratory tract

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Non respiratory functions of respiratory tract

Various non-respiratory functions are also shown by respiratory tract. Not only gaseous exchange that is the primary function of it. Lungs show defense barrier and metabolic functions. It is the main organ of respiration. Some important compounds are synthesized by it. Non-respiratory functions are: a) Olfaction Provides olfactory sensation. Presence of olfactory receptors in mucus … Read more

Natural killer cells (NKC)

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Natural killer cells (NKC)

Introduction of Natural Killer Cells Natural killer cells are class of lymphocytes that respond to intracellular microbes by killing the infected cells and by producing macrophage activating cytokines. They comprise about 10% of the lymphocytes in the blood and peripheral lymphoid organs. These cells contain abundant cytoplasmic granules and express characteristic markers but they do … Read more