a) As the veins are responsible for returning deoxygenated blood to the heart‚ they are most often working against gravity. The blood is prevented from reversing direction through large venous valves. However‚ if the pressure applied downwards on these valves is great enough and applied for a significant period of time‚ such in the case of prolonged periods of standing‚ the edges of the veins can become distended and eventually prevent the edges of the valves from successfully sealing. Varicosities
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There are several good reasons to consider having your varicose veins removed. The most popular reason is appearance. Unless your legs and ankles are covered with clothing all of the time‚ your varicose veins will show. If they are severe‚ you may feel self-conscious and conceal your legs. This is the number one reason people want to remove their varicose veins. Varicose veins develop because the veins become weak and do not function properly to push the blood up the legs‚ against gravity back to
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Columbus the Last Voyage This film tells the story of how Christopher Columbus went on his many voyages to find and discover. However‚ this films tells the truth about his voyages not only discussing his successful trip of find the Americas but the other voyages as well. In these voyages he was not successful these trips were instead marked by disaster‚ accusations and of course betrayal. Columbus was still on the hunt to a fast route to Asia throughout this voyage he faced many troubles having
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The Chinese Voyages of Exploration Succeeded by the non-Chinese Qing Dynasty‚ the Ming Dynasty is considered to be the last native dynasty to exist. The Ming Dynasty lasted from 1368 to 1644 and is known as the greatest era of social stability and organized government (European). Zhu Yuanzhang founded the Ming Dynasty; he is also known as Hongwu‚ Taizu‚ and Ming Taizu. Hongwu died in 1382‚ leaving his grandson‚ Huidi‚ the next heir. However‚ Chengzu‚ or Yongol‚ created a military campaign to
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This poem “Impression De Voyage” by Oscar Wilde is in the sonnet form ABBA-ACCA-DEFFED. All in all though it really is just about the voyage‚ the poet took everything into account. The 14 lines stanza of the poem is composed in iambic pentameter and with a complex rhyme scheme. The Poet uses sounds in the sestet at the end. The imagery is nice (sapphire/opal/red sun upon the sea). There is the imagery of nature‚ sea and ship. Wilde presents ship imagery through various images like; steep prow‚ hoisted
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Luz Chavez Biology 9 Term 3 The Timeline of the Beagle Voyage 12 February 2013 On January 1836 at Sydney‚ Australia he was congratulating himself that he was born an Englishman‚ and Darwin wonders why there is a completely different set of mammals in Australia. On September- October of 1835 at the Galapagos Islands Darwin discovers many species unique to the islands but they are mysteriously related to mainland species. Through January- February 1835 at the Chiloe’ Island‚ Chile Darwin see
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Gavin Menzies was a royal navy submarine captain that worked for the British government and now is trying to let the world know his opinion on the discovery of the Americas: did the Chinese discover the Americas before Columbus? Menzies takes on a voyage where he tries to find evidence to support his thesis and comes up with several different theories; his first stop: Calicut. Menzies claims that the Ming dynasty’s famous navigator Zheng He managed to reach the cape of good hope and from there he
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Investigating arteries and veins Aim: How far the artery and vein can stretch when different masses are hanged from them. Hypothesis: I predict that the heavier the mass the more likely it is to stretch the artery and vein further‚ eventually causing it to break apart. In addition the vein will stretch further than the artery when given the same mass. This is because arteries are much larger‚ muscular and more elastic than the veins‚ as they carry high pressure blood. Veins do not transport blood
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I can sequence events in a story. I can spell and identify my spelling words. Do Now: Work on Day 4 in your weekly review. Introduction: https://www.youtube.com/watch?v=5-I1yi28uUo What have we been talking about this week? (sequencing) Very good. Why is sequencing important? (So we can know when things happen) Very good. Now we are going to watch a video to help us better understand. https://www.youtube.com/watch?v=5-I1yi28uUo What were some of the signal words we saw in the video? (first
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Aislinn Noone Noone 1 Mr. Majeski AP Lit P1 Voyage of Life Response 9-6-12 Life’s Beginning and End In Thomas Cole’s series of paintings‚ “Voyage of Life‚” shows the different stages of a person’s life. The message of the series is how a man’s life can be summarized in four stages that are guided by angels from birth to death. The first painting‚ “Voyage of Life: Childhood‚” shows a lavish landscape full of thriving plant life. This represents brand new life. A holy figure
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