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HUMAN BLOOD STRESS
BLOOD STRESS It is defined as the lateral pressure exerted by column of blood of the walls of blood vessels. Venous pressure is less than arterial pressure. Contraction of the left ventricle during systole pushes blood into the arterlal syatem. he pressture produced is called the systolic hl lood pressure (SBP) and is about 120 mm Hg, During the diastole the pressure in the arteries is called the diastolic blood pressure (DBP). It is about 80 mm Hg. Factors affecting blood pressure are: ⚫Age ⚫Body built ⚫Posture ⚫Exercise ⚫Sleep Blood pressure (BP) is measured by an instru ment called sphygmomanometer. There are two methods by which one can record BP. 1. Palpatory 2. Auscultatory. 🔘Palpatory Methods : The subject is either seated comfortably or is lying supine on the examination couch for 5 minutes. The blood pressure c...
History of Pompeii
History of Pompeii Hi, friends I am going to discuss with you about history about pompeii. About History of Pompeii : Mount Vesuvius, a volcano near the Bay of Naples in Italy, has erupted more than 50 times. Its most famous eruption took place in the year 79 A.D., when the volcano buried the ancient Roman city of Pompeii under a thick carpet of volcanic ash. The dust “poured across the land” like a flood, one witness wrote, and shrouded the city in “a darkness…like the black of closed and unlighted rooms.” Two thousand people died, and the city was abandoned for almost as many years. When a group of explorers rediscovered the site in 1748, they were surprised to find that–underneath a thick layer of dust and debris–Pompeii was mostly intact. The buildings, artifacts and skeletons left behind in the buried city have taught us a great deal about everyday life in the ancient world. Life in Pompeii Greek settlers made the town part of the Hellenist...
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