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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.
Explain the Apnoea Apnoea means cessation of breathing. Temporary apnoea may be seen in low carbon dioxide tension in blood. During swallowing, there is a temporary apnoea.
what is a chemical
Which "spheres" are interacting when water evaporates from plants? Select all that apply.
Explain the Filiform papillae These are long and slender and are the smallest of the three types of papillae. They are found to be most numerous on the edges and anterior two t
what is law of motions
describe the factors which decide broad area of scientific activity
Assembling First Aid Box : Your Counsellor will show you the contents of the first aid box available at the Study Centre. You observe the contents. As part of this activity, yo
Homo Habilis-The First Tool Makers: One of the most important developments in human evolution was the dramatic expansion in brain size which, according to the fossil data
Give a rock name for sample. Note that the colour of this type of rock varies greatly, depending on the abundance of organic matter and iron oxides. Samples are both carbonate rock
Coenzyme : A molecule that binds to an enzyme and is essential for its activity, but is not permanently altered by the reaction. Many coenzymes are derived from vitami
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