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Define age related changes in Respiratory system
During ageing, alveoli (present in the lungs) become flatter and shallower, alveolar ducts enlarge, walls become thinner, contains less capillaries, respiratory surface area decreases, elastic recoil response is lost, pulmonary diffusing capacity gets reduced. The respiratory response to hypoxia and hypercapnia is sluggish in the elderly. There is an overall impairment in ventilation, diffusion, regulation etc. that leads to slowing down of the respiratory responses.
Atmosphere: Atmosphere is an envelope of the most useful gases that cover the planet earth. It makes our planet unique and enables life to prosper. If the earth did not have a
In the following table state how gymnosperms are adapted for living on land with respects to each of the following aspects Aspect Adaptation for living on land Alternation of Gener
Chemistry in golden era: Chemistry In the field of metallurgy too we notice some remarkable developmenk. Before the close of the sixteenth century, zinc was isolated by a pr
describe the factors which decide the broad area of scientific activity
Explain the Simple Cells - Primary Visual Cortex They are most sensitive to lines oriented in a particular angle to the vertical. Simple cells probably receive a convergence of
FIRE HAZARDS IN THE LABORATORY : The average science laboratory is a particularly hazardous area when it comes to fire. Flammable liquids, compressed and liquefied gases, hazard
how to make assignment of dry cell?
Laboratory Method of Soil textural classes The mechanical analysis methods have been used by USDA to develop a method for naming the textural class. This is depicted by a trian
Judicious use of Plant/Animal Material for Lab. Purposes Live or preserved biological material is an essential requirement in all bio-labs. This material needs to be brought in
We will first give a brief description of the qocial and economic changes of this period so that developments in science can be seen in the proper perspective. Already, by the
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