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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.
Types of Resource Maps: Generally, several types of maps, based on the type of.resburces, are prepared. Some of these are: Soil Maps showing the types of soil, their comp
What is tha nature and scope of zoology?
Define Specific Defence Mechanism In the section on white blood cells, we learnt that whenever a germ or infection enters our body, the WBCs snap to attention and destroy the c
What minerals attract lightning? Ans) Big structures and things that are metal attract lightning, also trees do. In fact, anything that is metallic having mineral may seem
Define the uses of buffer method The buffer method of Shoemaker and coworkers for determining lime requirement is being widely used in India. In this method 5g of soil is added
State the harmul effects of Acidity of soil Acidity of soil may have harmful effects on plants due to the effect on enzymatic changes, reduced availability of nutrients like c
To show that expired air contains carbon dioxide The two flasks are linked so that when you breathe by the T piece, all the air bubbles by the lime water in the flasks. One tub
what is postcranial
Explain the Intestinal Phase Rest 10% of the total gastric secretion is discharged in this phase. When partially digested contents of the stomach reach the duodenum, presenc
what is diffrence between rh positive and rh negative
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