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Blood Vessels - Circulation
The blood vessels have elastic walls and a layer of smooth muscles in their walls which enable them to change their diameter. There are three main types of blood vessels - arteries, capillaries and veins with characteristic differences among them. Arteries have relatively thick walls that consist of heavy, strong layers of elastic fibres and smooth muscles. As the arteries branch, their diameter becomes smaller and the relative amount of muscle tissue increases in proportion to the elastic tissue.
Capillaries are the smallest units, they are single cell thick. Almost all exchange between tissue and blood takes place through the walls of the capillaries. The veins also contain smooth muscles and fibres.
A healthy, primiparous (first-time) mother delivered a healthy infant several hours ago, but the mother has experienced postpartum hemorrhage. Which of the following disorders is m
Q. Explain Hydraulic Formula? This relates to pressure gradient and velocity of flow: V2 = (Cv)2 2gh or V = (Cv) 2gh Wherein, V = velocity of flow Cv = coefficient
who is the farther of bio diversity?
What is a nutrient? A nutrient is it substance used in the metabolism and which is acquired from the diet. Such as, vitamins and necessary amino acids are nutrients.
Q. What are the differentiations of the cell membrane? In some kind of cells, the cell membrane presents differentiations that are necessary for the specific functions of the c
give main charecters of protozoa
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Define Nutritive aspects of food constituents and effect of processing and handling? Nutrient stability; effects on nutrients of agricultural practices, handling, processing an
Upwelling zones of high biological productivity are found along the western coasts of the major continents. What causes this upwelling? a- cold currents moving from the equator tow
Q. What are the animal pole and the vegetal pole of the vertebrate egg? The animal pole of a telolecithal egg is the portion of the egg with little vitellus it is opposite to t
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