The muscular structure of the heart consists of two parts - the muscular layers of the atria and the muscular layers of the ventricles. 





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The muscular structure of the heart consists of two parts - the muscular layers of the atria and the muscular layers of the ventricles.



The vascular system consists of three groups of vessels - arteries, veins and capillaries.

The vessels carrying blood to and from the tissues of the body compose the general circulation. They are called the systemic vessels.

The pulmonary circulation is formed by the vessels carrying blood to and from the lungs.

The portal system is formed by the veins passing to the liver.

Most of the arteries are composed of three coats. The arteries dilate and contract simultaneously with the action of the heart.

CLASS ASSIGNMENTS

XI. Read the following words and explain the pronunciation of the letter combinations in bold type:

Coat, count, cause, law, load, loud, autopsy, saw, soak, sound, nausea, raw, moan, amount, gauze, road.

XII. Form and translate the new words by adding: a) the prefix sub-: divide, tropical, class, cutaneous, costal, family, mucous;

b) the prefix inter-: costal, national, muscular, vertebral, ventricular, vascular.

Х III. Form the Past Participle of the verbs given in brackets. State their functions. Translate the following sentences:

The patient (admit) to the hospital was a 45-year-old female. 2. The inner organs (include) in the thoracic cavity are the heart and the lungs.

The blood (carry) to the lungs is called venous blood.

XIV. Give the English equivalents:

В три раза толще, чем стенки; 2) малый (легочный) круг кровообращения; 3) большой круг кровообращения; 4) кровообращение в системе воротной вены.

XV. Choose the necessary Participle. Translate the sentences:

The blood vessels (located, locating) on the anterior surface of the arm were dilated. 2. The vessels (carried, carrying) blood to the heart are called veins. 3. The lungs are the inner organs (included, including) in the thoracic cavity. 4. The muscular structure of the heart (consisted, consisting), of two parts includes muscular layers of the artria and muscular layers of ventricles.

XVI. Read the following sentences and define instead of what words the substitutes one - ones, that - those are used:

The condition of patient M. is worse than that of patient N. 2. The number of the vertebrae in the coccyx is less than the number of those in the neck. 3. The bones of the lower extremities are longer than those of the upper ones.

XVII. Read Text B. Entitle it. Say what it deals with.

Text В

In the left chamber the atrium and ventricle are separated by the mitral ['maitrəl] valve.

In the right chamber the atrium and ventricle are separated by the tricuspid [trai'kAspid] valve.

At the point of origin of the aorta in the left ventricle another valve is located. This valve is called the semilunar [,semi'lu:na] valve of the aorta.

At the point of origin of the pulmonary artery in the right ventricle the fourth valve is located. It is called the semilunar valve of the pulmonary artery.

LESSON 14

HOME ASSIGNMENTS

I. Запомните чтение следующих слов : respiratory [rə'spirətəri] дыхательный , респираторный mediastinum [,mi:diə'stainəm] средостение pleura [' р l υ ərə] плевра lobe [lə υ b] доля external [ik'st3:nl] наружный serous ['siərəs] серозный , сывороточный lateral ['lftərəl] боковой visceral ['visərəl] внутренний subserous [sAb'siərəs] подсерозный

II. Выучите следующие слова и словосочетания : cover ['kAvə] v покрывать , закрывать shape [ʃeip] n форма , очертание ; вид ; образ border ['bɔ:də] n граница , край extend [ik'stend] v простирать ( ся ); увеличивать ( ся ); расширять ; продлевать

upward ['Apwəd] adv вверх

above [ə'bAv] р r р над ; свыше

level ['levl] n уровень; количество

thin [θin] а тонкий; худой

vary [veəri] v менять(ся), изменять(ся); разнообразить

heavy ['hevi] а тяжелый; плотный

left [left] а левый

capacity [kə'pfsəti] n емкость; объем; vital capacity of the lungs жизненная емкость легких

infant ['infənt] n младенец, ребенок до двух лет

pale [peil] а бледный

colour ['kAlə] n цвет; v окрашивать

proper ['ргɒрə] а собственный; правильный; соответствующий;

Надлежащий

III*. Вставьте необходимые по смыслу слова, данные ниже:





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