Вопрос № 223425 - Английский язык

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The human heart contracts from the first moment of the life until the last one. 1______________________________. Physiologists have determined that in the adult the heart makes from 60 to 72 beats per minute. 2____________________________. Research work has determined that rate of the heart beat increases depending on different emotions.
Each beat of the heart is followed by a period of rest. 3_______________________________.
Each cardiac cycle consists of three phases: the first phase of short contraction – the atrial systole, the second phase of a more prolonged contraction – the ventricular systole. The period of rest is called the diastole.
4_______________________________.

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The human heart contracts from the first moment of life until the last one. The contractions of the heart pump the blood through the arteries to all 1_______ of the body. Physiologists have determined that in the adult the heart makes from 60 to 72 2_______ per minute. In children the rate of heart beat is much higher. Research work has determined that rate of heart beat increases depending on different emotions.
Each beat of the heart is followed by a 3_______ of rest. Each contraction and a period of rest compose a cardiac cycle.
Each cardiac cycle consists of three phases: the first phase of short contraction – the atrial systole, the second phase of a more prolonged contraction – the ventricular systole. The period of rest is called the diastole.
Research 4_______ of many physiologists has estimated the role of the ventricles as the main pump of the human heart.

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The main symptoms of tetanus are stiffness of jaw, spasms and convulsions, difficulty in swallowing. 1____________. The incubation period is from 5 days to 2 weeks. 2_____________. 3_____________. The patient with tetanus should be hospitalized and the wound should be cleaned immediately. 4______________.

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The main symptoms of the polomyelitis are: slight fever, general discomfort, headache, stiff neck, stiff back. 1_____________. The cause of poliomyelitis is a virus. 2_____________. 3_____________. The child should be isolated from onset of the disease till fever subsides. 4______________.

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A newborn baby has no immunity to this disease at all, and so he must be kept protected from children who have any kind of cough. Whooping cough seems like an ordinary cough for the first few days, but gradually the bouts become more and more prolonged and the child coughs continuously. 1__________. At the end of the bout of cough, when he takes a deep breath, a croaky sound is heard which is called the whoop and which gives the disease its name. 2______________.3_______________.
The child loses weight because of repeated vomiting. 4________________.

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1______________. It commonly occurs between 5 and 15 years of age. The incubation period, i.e. the period between acquiring the infection and the first symptoms, is usually three weeks. 2_______________.
There is a pain on opening the mouth or chewing, a moderate degree of fever, loss of appetite, headache and body pain. Both sides of the face may swell at the same time. 3_______________. The swelling lasts about 6-7 days.
Mumps may affect testicles in boys and ovaries in girls, resulting in sterility. This is rare before puberty, and so it is best if children acquire the disease at a younger age. 4______________. Mumps can be prevented by immunizing the child with mumps vaccine.