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What is Specific defence mechanism
Specific: These relate to specialized cells located throughout the body which respond to invasion of foreign materials/microorganisms such as bacteria, virus, fungi or unwanted substances produced or entering the body. Some specific cells are fixed in tissues such as thymus, lymph nodes, bone marrow, spleen, lymphoid tissue of the respiratory, gastrointestinal and genitourinary tract, kupffer cells of the liver and Peyer's patches of the small intestine.
COMMO N EYE DEFECTS - 1 . Glaucoma - Pressure of aquous humour is increased, retina is degenerated. 2 . Presbyopia - Due to non etastic cilliary muscles,
Nutrient Absorption Except for carbon, oxygen and hydrogen which are provided by CO 2 and water, all the other elements essential for plants are provided by the soil. Hence,
Q. What is the function of the flagellum of the sperm cell? How is it formed? The flagellum of the sperm cell is made by the centrioles that migrate to the region posterior to
Hygroscopic Coeflicient To have a more complete picture of soil moisture relations, let us take a soil sample and oven dry it for 24 hours at 11 o C. Now if this soil is kept i
In the living condition (found in sea) you would be able to observe the following features in radiolarians: The cytoplasm is divided by a perforated and chitinous metnbrane into
Assessment of Development in Children The development of a child is studied through various responses which he exhibits following a natural or experimental stimulus. Basical
6. What is the function of the myelin sheath? Do all axons present a myelin sheath?
Describe the access in heart disease Newborn? A secure peripheral or central intravenous access is very essential. Inotropic agents with vasoconstrictor properties like Dopamin
Q. What is a goiter? What is endemic goiter? How this problem is socially solved? Goiter is the abnormal enlargement of the thyroid gland the goiter appears as a tumor in the a
A large leaf on a plant in bright sunshine evaporates 5 grams of water per hour. Cooling the leaf through evaporation in this manner enables the plant to eliminate heat energy at t
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