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An adequate level of pressure is needed in the arteries to keep the blood flowing through the cardiovascular system. The chief determinant of arterial pressure is the volume of blood in the arteries and the important determinants of this are the cardiac output and the peripheral vascular resistance. The resistance offered by the arterioles accounts for almost half the total resistance in the systemic circulation. The muscle in the arterial wall allows them to constrict or dilate. When they constrict, the resistance increases and the blood pressure increases. The vasomotor centre in the medulla when stimulated sends impulses via the sympathetic to the smooth muscle in the arteries, arterioles and veins which results in their constriction.
Q. What is the usual shape of poriferans? Sponges have bodies in the form of globes or tubular vases open in the upper extremity. They have a porous walls and internal central
Light and Distribution We have mentioned in the beginning that the variation in the amount of light generally affects the global and local distribution of plants and animals. L
Dextrorotatory:- When an optically .active substance rotates the plane of polarized light in a clockwise direction.
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What are fat soluble vitamins? As we already know, there are four fat-soluble vitamins - A, D, E and K, The presence of fat is required for the assimilation of these vitamins
The Peripheral membrane proteins are less strongly bound to the lipid bilayer than integral membrane proteins and can be readily erased through washing the membranes wi
Explain cardiac examination auscultation and its techniques? Auscultation of the heart sound and associatcd sound is very important to diagnose the cardiovascular diseases. It
Q. What is the lymphatic system? The lymphatic system is a network of specialized valved vessels that drain interstitial fluid (lymph), the lymphatic system is as well responsi
Determine the Modification of native starch Modification of native starch can be either physical or chemical. Chemical modification includes reaction of starch with acid or al
Describe in detail - Nacreous layer. The innermost of the three layers of a mollusc shell. It is also referred to as mother-of-pearl, it comprises thin layers or calcium carbon
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