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Define age related changes in Immune mechanisms
The immune competence decreases with age. This affects the cell-mediated and humoral immunity. We will learn about these aspects later in Unit 3. The thymus involutes (roll inwards), there is an increase in T cell auto reactivity and autoantibody titre. This makes the elderly more susceptible to infections. The severity of ageing can be reduced by good nutrition, regular physical exercises and mental tranquility.
Consider the following differential equation: t 2 x''+ 5 t x' + (3 + 2 t) x = 0 a. Show the steps needed to derive the recursive formula for the coefficients of the pow
What is amino acids metabolism ? Nitrogen enters the body through a variety of compounds present in the food, the most important being amino acids present in dietary proteins.
Conservation of mineral resources: Mineral reserves are present in a limited quantity and they can be exhausted. At the present rate of consumption many of them will not last
Define the Sympathetic Nervous System The sympathetic component of the autonomic nervous system is concerned with in- creasing the level of arousal and energy expenditure - pri
What is the term for groundwater emerging naturally at the ground surface, where the water table intersects the surface: Spring is the term for groundwater emerging aturally
What are Vitamins Vitamins are generally synthesized by plants and found in animals as a result of food intake and also because of synthesis of some of the vitamins by gu
First Aid Procedures : Your Counsellor will explain the first aid procedures through a demonstration session. Carefully observe ali the steps. Try to relate the contents of the f
DISPOSAL OP CARCASS : After the experiment with an animal is over, the dead animal, i.e. carcass should not be left in the laboratory. The dead animals start decaying and putr
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How did the Earth form and become spherical? The Earth's Shape : About five billion years ago the solar system was forming from gases and dust floating in space. Gravity, th
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