Ex. 22. Look, read and translate. Memorize the adjectives.

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Ex. 23. Complete these sentences and according to the adjectives in the diagram:

1. Arteries are long, tubular blood vessels which can bend and stretch, i.e. they are ….. and …...

2. Some cells and molecules can pass through capillary walls. In other words capillaries are …...

3. Some white blood cells (leukocytes) can destroy bacteria, i.e. leukocytes are ……

4. Platelets are very small particles which stick together to stop bleeding, i.e. they are …..

5. Red blood cells (erythrocytes) can bend to get through narrow blood vessels and the spring back into shape. In other words erythrocytes are …...

6. Blood cells cannot pass through artery walls. This means that arteries …...

7. Leukocytes can pass through capillary walls. This means that capillary walls are ….. to leukocytes.

8. Leukocytes can move around in the tissues, or, in other words, they …...

9. Veins are wide blood vessels with some muscle tissue in their walls, i.e. veins …...

10. Erythrocytes can not usually pass through capillary walls. In other words, capillary walls are usually …...

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