human heart are arteries‚ veins‚ blood vessels‚ and capillaries. Heart disease causes many different kinds of problems that are related to the process known as atherosclerosis. The condition happens to a person when a good size amount of plaque has built up in their arteries. The results from this occurring narrows the room inside of our arteries and makes the blood flow a lot harder to travel through our arteries. A blood clot can even form which causes the flow of blood to stop and causes a person
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Write your name here Surname Other names Edexcel Certificate Edexcel International GCSE Centre Number Candidate Number Biology Unit: KBI0/4BI0 Science (Double Award) KSC0/4SC0 Paper: 1B Tuesday 15 May 2012 – Morning Time: 2 hours You must have: Ruler Calculator Paper Reference KBI0/1B 4BI0/1B KSC0/1B 4SC0/1B Total Marks Instructions Use black ink or ball-point pen. Fill in the boxes at the top of this page with your name‚ centre number and candidate number. Answer all questions
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Investigation of the influence of the endothelium on the actions of acetylcholine and nitroprusside. Results (a) Estimate the maximum responses (Emax) and EC50 values for phenylephrine with the two types of arterial ring. Put this data in a single‚ self-explanatory table. Table1. Emax and EC50 values for phenylephrine. Phenylephrine | Emax in grams tension | EC50 in nM | Endothelium intact | 2.2 | 40 | Endothelium denuded | 2.9 | 10 | (c)
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Ramipril: Functional class: Antihypertensive Chemical class: ACE inhibitors Action: ACE inhibitors reduce ACE. ACE converts angiostenin I to angiostenin II‚ which narrows heart vessels‚ which causes high BP. ACE inhibitors prevent ACE from converting angiostenin I to angiostenin II. This results in the dilation of blood vessel‚ which lowers BP. Adverse effects: Hypotension‚ angina‚ headache‚ fatigue‚ proteinuria‚ ‚ rash‚ sweating‚ cough. Contraindications: breastfeeding children‚ hypersensitivity
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A fringe of life is developed by nature for all living things - including man. All life forms follow nature’s commands except man‚ who has found ways of ignoring them. The sun‚ the moon and the stars would have disappeared long ago... had they happened to be within the reach of predatory human hands. A very good morning to one and all. Today I’m here to share my views with you on the topic “when we heal the earth‚ we heal ourselves.” I have come to believe that the physical destruction of the earth
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rejoice! According to a study from the University of Adelaide in Australia‚ dark chocolate (sorry‚ milk chocolate lovers) may reduce blood pressure. That’s because cocoa contains antioxidant compounds called flavanols‚ which are responsible for the formation of nitric oxide in the body. Nitric oxide causes blood vessel walls to relax and open wider. The result? Lower blood pressure. What’s more‚ daily consumption of dark chocolate has also been linked to lower incidents of heart attacks and stroke in
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There are twenty-four different blood types known. The most common blood types known are A‚ B‚ AB‚ and O. The knowledge of blood types has saved so many people’s lives. Blood types are also called blood groups. Blood types are inherited‚ and they never change. Everybody has a blood type. All human blood looks alike‚ but once tested it shows the differences between the blood. The letters A‚ B‚ AB‚ and O stand for two antigens labeled A and B. Antigens are substances targeted by the immune system
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Offshore Support Vessel Market by Type & Geography - Global Trends & Forecast To 2018 On 04th APR. 2014 This report analyzes various marketing trends and establishes the most effective growth strategy. It identifies market dynamics such as drivers‚ opportunities‚ burning issues‚ and winning imperatives. Major companies such Tidewater (U.S.)‚ Edison Chouest (U.S.)‚ Seacor marine (U.S.)‚ Maersk supply service (Denmark)‚ Bourbon (France) etc. have also been profiled in this report. For this
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seconds‚ someone is in desperate need of blood. So I’ll like too speak something regarding blood donation… We all need blood to survive‚ but for sick children‚ accident victims and cancer patients just to name a few – a shortage of donated blood means the difference between life and death. Today we have bio technologically engineered human organ that can be transplanted at time of need. But there is no substitute for blood. Blood donors are the only source of blood for these sick children‚ accident victims
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to extreme temperatures‚ and smoking may trigger angina attacks. Unstable angina is often caused by blood clots that partially or totally block an artery. Larger blockages may lead to heart attacks. As blood clots form‚ dissolve‚ and form again‚ angina can occur with each blockage. Variant angina occurs when an artery experiences a spasm that causes it to tighten and narrow‚ disrupting blood supply to the heart. This can be triggered by exposure to cold‚ stress‚ medicines‚ smoking‚ or cocaine
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