Используя дополнительные источники, выясните, от какого слова образовано слово «пин».

EXERCISE 6.  

Вставьте артикли, где это необходимо:  

1. Blood contains a fluid called plasma and cellular elements.

2. Erythrocytes (red blood cells) are important in (-) gas exchange taking place in (-) lungs.

3. Leucocytes (white blood cells) are subdivided into (-) different types.  

4. Granulocytes are formed in the bone marrow.  

5. Agranulocytes are produced in (-) lymph nodes and (-) spleen.  

6. Platelets are (-) tiny cells formed in the bone remaining after the coagulation process is the serum.  

EXERCISE7.  

Вставьте предлоги или наречия:  

1.Thrombocytes are necessary for blood clotting.  

2.The plasma is the fluid portion before clotting has occurred.  

3.There are two types of agranulocytes.  

4.Granulocytes are cells with granules in their cytoplasm.  

5.The number of leucocytes is from 4,000 to 10,000 per cubic millimeter.  

6.The oxygen is used by body cells in the process of converting food into energy.  

7. Carbon dioxide is expelled in the process of breathing.  

8. Erythrocytes transport oxygen from the lungs through the blood stream to the cells of the body.  

9.They also carry away a waste product of catabolism.