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Define age related changes in Cardiovascular system
There is a decrease in elasticity of the aorta and other large arteries as age increases. Thickness of blood vessels increases leading to a rise in blood pressure. The myocardium (muscle wall of the heart) shows atrophy. There are structural changes in the valves. Number of pacemaker cells gets reduced, thereby a reduction in heart rate is observed.
a food chain that does not start with plants??
Define the Functions of Small Intestine What functions does the small intestine perform? Can you list a few? Tally your responses with the functions enumerated herewith. The sm
Gases : Critical temperature is the A substance which has a critical temperature below 50°C, has a vapour temperature above which pressure of more than 3 bars absolute (highly
Explain the property of Water Water has a significant property called surface tension that markedly influences its behaviour in soils and may be measured by level of water rise
Define The Limbic System The limbic system, like you would realize, is as well referred to as the emotional brain. It is found buried within the cerebrum. This system consists
What layer of the earth does magma form? Magma is part of the layer just under the crust. It tell us that while everything seems solid underfoot in fact that is not quite so
Enzyme Immobilisation: The use of enzymes as catalysts is well known in a number of industries, such as baking or wine making. But punfied enzymes are soluble in water. It
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I really need help on cells
Resource Energy: The demand for energy doubles every 14 years and is taken as one of the indicators of development of a country. India, with 16% of the world's population c
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