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16 Fill in the blanks with prepositions, where it is necessary:

1 The products of digestion are absorbed ... capillaries in the intestinal wall and carried in the hepatic portal vein … capillaries … the liver. 2 The blood leaves alone the hepatic vein … join the inferior vena cava and pass … the heart. 3 Liver cells also manufacture … proteins and lipids. 4 Unwanted proteins are destroyed and changed... urea. 5 … addition, the liver destroys many poisonous substances. 6 Iron and several other minerals are also stored ... the liver. 7 The liver is a complex organ that can be disrupted ... a number of disorders. 8 Many disorders do not produce any symptoms ... they have reached an advanced stage. 9 Bile salts and bilirubin are formed ... the liver. 10 Each lobule is surrounded … capillaries … hepatic portal vein and the hepatic artery.

17 Fill in the prepositions where it is necessary:

Cystitis rarely is a primary condition. It usually is a secondary ... an infection of the kidney, prostate or urethra. The bladder epithelium normally is highly resistant ... infection. Following major surgical procedures, childbirth and prolonged bed rest, lowered resistance, plus inadequate bladder emptying, predispose to the development ... cystitis.

Pathology may vary ... slight increase … vascularity of the trigonal region … generalized oedema and ulceration. Cystitis … long duration may produce a thick walled, contracted bladder … small capacity. Calcareous incrustations ... the epithelium result … chronic infections due … the urea splitting bacteria. Pain is present … the anterior and side regions. Chills, fever and systemic manifestations, when present, may be … bacterium. Symptoms and signs are the same ... chronic cystitis, but are … lesser degree.

18 Translate the sentences paying particular attention to the combination keep + preposition:

1 Visitors are requested to keep away while the influenza epidemic persists. 2 It is difficult to establish the diagnosis if you keep back the important facts of your family history. 3 Insecticides have helped to keep away mosquitoes. 4 He tried to keep in with the head surgeon by doing him special favours. 5 She was advised to keep off spicy food lest there should be a relapse of nephritis. 6 Keep on talking to the patient; it may help him psychologically. 7 Please keep out of the maternity hospital nursery in order to keep out possible infection. 8 I hope you will excuse my not keeping to the subject of my lecture, though I will keep to my promise to give you a comprehensive view of the problem. 9 Unless we keep together, we’ll never be able to face the dangers of the situation. 10 If we keep up resuscitation efforts, the patient’s circulation may be restored to normal. 11 I didn’t mean to keep you up, but there was an emergency operation, which I had to perform. 12 Medical science is pacing at such a rate nowadays that it is almost impossible to keep up with what is published on one’s own subject. 13 The upkeep of a modern hospital with sophisticated equipment is extremely expensive.

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