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The brain cortex under the influence of external and internal stimuli sends impulses to the stomach and the duodenum, which cause a spastic contraction of vessels. Such a spastic contraction results in local trophicdisturbances followed by erosion of the affected area by the gastric juice.In the majority of cases ulcer is observed to develop in particularlynervous persons, often after emotional overstrain. But an irregular diet incombination with an emotional overstrain is often observed to contribute tothe onset of ulcer development.Gastric and duodenal ulcers are found to develop more frequently in menthan in women, mainly at ages of 25 to 40 years. This disease is characterizedby pains, haemorrhages, nausea, vomiting, etc. At the onset of the diseasepain is usually dull in character. In gastric ulcers pain is found to growworse after meals. Acute pain in the stomach is known to be characteristicof perforated ulcers. Pain due to ulcer is well known to occur periodicallyand be intermittent in occurrence.The course of ulcer has proved to vary with age and sex, location ofulcers, etc. At a young age its course has no characteristic clinical manifes­tations. In old persons the incidence of ulcers is known to be rare. But theyare often complicated by considerable haemorrhage resulting from scleroticchanges in the stomach.Ulcers are known to have a chronic, cyclic course, with remissions from6 to 12 months. Exacerbation (обострение) of ulcers, particularly that ofduodenal ulcers, has been found to occur in spring and autumn.

Task 5: Закончите данные предложения в соответствии с содержаниемтекста А:

1. Patients with perforated ulcers are known to complain of... (a) an acutepain in the stomach, (6) a sharp pain in the substernal area radiating to theshoulder. 2. In old persons ulcers are complicated by haemorrhage which isdue to... (a) sclerotic changes in the stomach, (6) an irregular diet in combi­nation with a nervous overstrain. 3. According to corticovisceral theory thedevelopment of ulcer is associated with... (a) disturbances in the blood supplyof the brain, (6) the lesions of the central and peripheral nervous systems.VIII. Прочтите следующие сообщения и запомните факты, о кото­рых в них говорится:Do you know that...1) the movement of food in the intestines of a healthy person may lastfrom 12 to 72 hours? 2) milk products contain about 100 substances usefulfor men? 3) salt consists of two poisons, which are combined chemically insuch a way that we can eat it? 4) the amount of gastric juice secreted in thestomach within 24 hours is 1.5-2.0 litres?

жүктеу/скачать 62.5 Kb.

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