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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 Protein Protein is derived from a Greek word "PROTOS" which means "Pre eminent", "jht or foremost" or primary matter. This name was suggested by Berzi
Explain Cyanosis - histotoxic hypoxia Cyanosis is a physical sign for causing bluish discoloration of the skin & mucous membranes. Cyanosis is caused by a lack of oxygen in the
describe history of science
Essential nutrients: Our body is a biochemical factory which can make many compounds for its needs. However, there are limits to this, and what our body cannot make has to be
Explain the Hyposecretion or Hypothyroidism during Infancy Decreased secretion of thyroid hormone results in the development of the condition known as cretinism. There is a lac
Objectives After doing this exercise, you should be able to: 1. Prepare a list of contact phone numbers required for handling laboratory accidents, state the contents of fir
Intrusion into the Nitrogen Cycle: Human intervention can disturb the nitrogen cycle. Let us see how. When we grow and harvest crops. there is loss of nitrogen from the soi
What are famous life scientist and what did they discover?
What are the methods of preventing or reducing soil erosion? The methods of preventing or reducing soil erosion are: (i) Prevention of deforestation (ii) Plantation of tre
Food Borne Diseases: If the food handler, like the cook, suffers from some infection and is not careful about washing his hands after defecation, the germs or eggs of worm
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