Fick's Law states that the volume of gas that diffuses across a barrier per unit time is given by:

Vgas = YxDx(P_>1 – P_>2)

where A and T are the area and thickness of the barrier, P_>1 and P_>2 are the partial pressures of the gas on either side of the barrier and D is the diffusion constant of the gas. D is directly proportional to the solubility of the gas and inversely proportional to the square root of its molecular weight.

New words

lung – легкое

volume – объем

equal – равный

the maximal – максимальный

tidal – вдыхаемый и выдыхаемый

inspired – вдохновленный

expected – ожидаемый

normal – нормальный

breath – дыхание

average – среднее число

human – человек

reserve – зарезервировать

residual – oстаточный

helium – гелий

dilution – растворение

techniques – методы

to be used to – использовать

to determine – определять

capacities – возможности

Поставьте слова в следующих предложениях во множественное число.

1. This room is very large.

2. There is a match in the box.

3. Has this lady a knife?

4. There is a man and a woman in the street.

5. This lady is that gen tleman's wife.

6. This shoe is too large for my foot.

7. The child is sitting on a bench.

8. My tooth is white.

9. This key is made of steel.

10. A potato is a vegetable and a cherry is a fruit.

11. This is my friend's study.

12. What is that child's name?

13. The cat has caught a mouse.

14. There was a lady, a gentleman, a boy and a girl in the room.

15. In the farm-yard we could see an ox, a sheep, a cow and a goose.

16. Is worker an Englishman or a German?

17. He is a Frenchman.

18. Why don't you eat this potato?

19. This strawberry is still green.

20. The withered leaf has fallen to the ground.

21. Can you see a bird in that tree?

22. Does your tooth still ache?

23. I held up my foot to the fire to warm it.

24. His child studies very well.

25. This man works at the office.

26. There is a new house in our street.

27. This story is very interesting.

28. I have hurt the foot.

29. The wolf has been shot.

30. He keeps his toy in a box.

31. Put this knife on that table.

32. I see a pupil.

Притяжательный падеж существительных / (Possessive case)

The child's toys – The children's toys

The boy's books – The boys' books

Перефразируйте следующие словосочетания и предложения, употребляя притяжательный падеж.

1. The room of my friend.

2. The questions of my daughter.

3. The wife of my brother.

4. The table of our teacher.

5. The poems of Shakespeare.

6. The voice of this girl.

7. The new club of the workers.

8. The letter of Pete.

9. The car of my parents.

10. The life of this woman.

Answer the questions.

1. How many lung volumes are there?

2. Are the lung volumes added together?

3. How can inspiratory reserve volume be inspired?

4. Can inspiratiry reserve volume be expired after a normal tidal expiration?

5. What is residual volume?

6. How are lungs capacities be composed?

7. Is vital capacity the maximal volume?

8. What is the functional residual capacity?

9. What is the inspiratory capacity?

10. Can residual volume be directly measured by spirometry?

Make the sentences of your own using the new words (10 sentences).