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Explain Mucous membranes - External Defence Mechanism
Mucous membranes: The digestive, urinary, genital and respiratory tracts open out at one or both ends. They do not have a direct communication with other parts of the body. The parasites, microbes present are not in the physiological interior of the body. The mucous membranes in these tracts are treated as a part of external defence. These membranes can resist entry of parasites, microbes into tissues.
Mucous traps the microorganism and immobilizes them. How? Mucous, as you may know, is a clear, sticky substance and has glycoprotein and water. The microbes get trapped in this sticky fluid. Let us see what role the mucous has in the body systems and organs.
Transport: River Valley civilisations were characterised by settlements along the rivers and growth of cities which needed, among.other things, stones and wood from distant
how do some flower make there own food
Diagnosis: 1. Diagnosis of the casualty involves considering the history, symptoms and signs. 2. History is the information as to how the accident or illness occurred.
Which type of ripple marks would you expect to find on the floor of a standing body of waterion..
Explain Transport of Oxygen By Plasma At a tension of 100 mm Hg, 0.3 ml oxygen is dissolved in every 100 ml of blood. This small volume is negligible as far as the oxygen suppl
Chemistry in golden era: Chemistry In the field of metallurgy too we notice some remarkable developmenk. Before the close of the sixteenth century, zinc was isolated by a pr
Question 1 Which of the following is best control group for double blind Phase II clinical trial? Justify your Answer. Placebo Concurrent Control No-treatment Concurrent
What is the difference among a semi-precious and a precious stone? The difference among precious and semi-precious comes down purely to human definitions that have been compuls
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Explain the Menopause The cessation of menstruation is menopause. Natural menopause typically occurs between 45 and 55 years of age. It is caused by changes in concentration of
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