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ANNO ACCADEMICO 2016-17: I ANNO – infermieri Inglese Scientifico Use A or AN: 1. I slept on _AN_ airbed. 2. She gave me _A_ hair. 3. He is _AN_ heir to the throne. 4. I boarded _AN_ airplane yesterday. 5. I saw _A_ hairy beast. 6. He has _A_ hoarse voice. 7. He dug the ground using _A_ hoe. 8. He is _AN_ honest man. 9. I was stung by _A_ honeybee. 10. It was _AN_ honour to meet her. 11. I did not have _A_ hope in Hell. 12. It was _A_ hot day. 13. We stayed in _A_ hotel in London. 14. I had to wait for over _AN_ hour. 15. There is _A_ house on the corner. 16. He timed me using _AN_ hourglass. 17. It was _A_ hybrid mouse. 18. I saw _A_ hydrogen balloon. 19. We sang _A_ hymn. 20. He is _A_ hypocrite. ANNO ACCADEMICO 2016-17: I ANNO – infermieri Inglese Scientifico ANNO ACCADEMICO 2016-17: I ANNO – infermieri Inglese Scientifico Months of the year Month Short form Date UK date January Jan 2nd January, 2012 2.1.12 th February Feb 13 March Mar 23rd March 23.3.12 April April (Apr) 30th April 30.4.12 rd February May May 3 June June (Jun) 10th June 10.6.12 July July (Jul) 26th July 26.7.12 August Aug 4 th May 12.3.12 3.5.12 August 4.8.12 st September Sept 1 September 1.9.12 October Oct 5th October 5.10.12 November December th Nov 25 Dec th 7 November December 25.11.12 7.12.12 NOTE: 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 10th First, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth Date (formal) Date (informal) Name of day Date (short) 24th December Christmas Eve 24.12.12 UK English 24 December 25 th December Christmas Day 25.12.12 26 December 26 th December Boxing Day 26.12.12 31 December 31st December New Year’s Eve 31.12.12 1 January New Year’s Day 1.1.13 December 24 December 24th Christmas Eve 12.24.12 December 25 December 25th Christmas Day 12.25.12 December 26 December 26 th Boxing Day 12.26.12 December 31 December 31st New Year’s Eve 12.31.12 January 1 Jan 1st New Year’s Day 1.1.13 25 December 1 January st US English ANNO ACCADEMICO 2016-17: I ANNO – infermieri Inglese Scientifico (to accompany the DVD of Body Worlds) The cardiovascular system Oxygen is distributed throughout the body in the blood stream by the heart. The heart is a hollow muscular organ, which keeps the blood stream constantly flowing. It pumps around 70 millilitres of blood per beat, around 70 times per minute at rest, and when exercising or running, even faster. In a human life comprising 75 years, that makes roughly 2.5 billion heart beats. When a heart is opened longitudinally, we can look into all of its chambers. Here we can see the muscular left ventricle, next to it, the right ventricle, and the two upper chambers, or atria, above. The left ventricle pumps blood to the body’s circulatory system, the right one pumps it to the lungs. Cusp-like atrio-ventricular valves extend between the ventricles and the atria to prevent blood from flowing in the wrong direction. In this heart, the mitral valve has been replaced with an artificial valve. The heart and the blood vessels comprise the cardiovascular system. It ensures the transportation of oxygen, as well as vital nutrients and hormones to the individual organs, and also the removal of waste materials. The network of blood vessels is exceptionally dense. If all of the blood vessels in a single human body were laid end to end, they would wrap around the equator twice. The blood vessels that supply oxygen and nutrients to the myocardium are called coronary vessels. Here the left coronary artery has been dyed yellow, and the right one red. Should the flow of blood in an artery be interrupted, the muscle fibres affected will no longer be supplied with blood, and will die. This is called an infarct, or heart attack. The necrotic muscle cells will gradually be replaced by a scar made up of connective tissue, as can be seen here in the apex of the heart. The wall of the heart in the affected area is substantially thinner and appears whitish. With a fresh heart attack, the wall of the heart can also tear, as can be seen in this cross-section. In such cases a significant amount of blood can escape into the pericardium, which then increasingly compresses the heart, thereby causing the victim to die. Here we can see an abdominal aorta. It has been cut open to show the inner wall. It has a smooth surface, while the tiny holes are from smaller arteries that are branching off. The artery stems from a younger person. By contrast, this abdominal artery displays a severe case of arterial sclerosis, and there are artificial vessels in the region of the iliac arteries. The high internal pressure inside this aorta has led to a massive dilation of the vessel’s damaged wall at several points. These sacculations are call aneurisms. Aneurisms generally have thin walls, and are filled with clotted blood. Should the wall tear, it can cause fatal haemorrhaging within a few seconds. ANNO ACCADEMICO 2016-17: I ANNO – infermieri Inglese Scientifico (to accompany the DVD of Body Worlds) The cardiovascular system Listen to and watch the DVD and answer the following questions: 1. The heart is the main organ of what system? A. The respiratory system. C. The cardiovascular system. B. The digestive system. D. The nervous system. 2. How much blood gets pumped around the body per beat of the heart? A. About 50 ml. C. About 70 ml. B. About 60 ml. D. About 80 ml. 3. Over what sort of period of a human life will the heart beat for around 2.5 billion times? A. About 50 years. C. About 75 years. B. About 60 years. D. About 100 years. 4. Inside the heart, what is the largest, most muscular chamber called? A. The right atrium. C. The right ventricle. B. The left atrium. D. The left ventricle. 5. If you took all of the blood vessels on the human body and put them end-to-end, how many times would they go around the equator of the Earth? A. Once (one time). C. Twice (two times). B. One and a half times. D. Two and a half times. 6. What are the blood vessels that supply nutrients and oxygen to the myocardium called? A. The arterioles. C. The veins. B. The coronary vessels. D. The venae cavae. 7. What is the space directly around the heart called? A. The pericardium. C. The lungs. B. The thorax. D. The left ventricle. 8. A weakened aorta can contain many areas of dilations or swellings in the artery wall. What are these called? A. Haematomas. C. Aneurisms. B. Blood clots. D. Bladders. ANNO ACCADEMICO 2016-17: I ANNO – infermieri Inglese scientifico The skeleton The bones of the skeleton 1: Skull 2: Maxilla 3: Cervical vertebrae 4: Scapula 5: Sternum 6: Thoracic vertebrae 7: Ulna 8: Radius 9: Phalanges 10: Femur 11: Tibia 12: Fibula 13: Metatarsals 14: Mandible 15: Clavicle/ collar bone 16: Ribs 17: Humerus 18: Lumbar vertebrae 19: Ilium 20: Sacrum 21: Metacarpals 22: Carpals 23: Coccyx 24: Patella 25: Tarsals 26: Phalanges ANNO ACCADEMICO 2016-17: I ANNO – infermieri Inglese scientifico The electrocardiogram (ECG): The normal sinus rythm ANNO ACCADEMICO 2016-17: I ANNO – infermieri Inglese scientifico The 12-lead ECG RA On the right arm, avoiding thick muscle. LA In the same location where RA was placed, but on the left arm. RL On the right leg, lateral calf muscle. LL In the same location where RL was placed, but on the left leg. V1 In the fourth intercostal space (between ribs 4 and 5) just to the right of the sternum (breastbone). V2 In the fourth intercostal space (between ribs 4 and 5) just to the left of the sternum. V3 Between leads V2 and V4. V4 In the fifth intercostal space (between ribs 5 and 6) in the mid-clavicular line. V5 Horizontally even with V4, in the left anterior axillary line. V6 Horizontally even with V4 and V5 in the midaxillary line. ANNO ACCADEMICO 2016-17: I ANNO – infermieri Inglese scientifico Analysis of an electrocardiogram (ECG) P wave Atrial depolarisation <80 ms PR interval (from start of P to start of QRS) PR segment (from end of P to start of QRS) QRS complex Ventricular depolarisation 80-100 ms T wave Ventricular repolarisation 160 ms ST segment (from end of QRS to start of T) QT interval (from start of QRS to end of T) U wave Papillary muscle repolarisation 120-200 ms <440 ms