II. Copy out and learn the following words

to ensure	[ın`ʃuə]	обеспечивать
loop	[`lu:p]	петля
narrow	[`nærɔu]	узкий
to penetrate	[`penıtreıt]	проникать, пронизывать
to split	[`splıt]	расщеплять
to surround	[sə`raund]	окружать
to stem	[`stem]	начинаться, отходить от

III. Pay attention to the word formation

de- [di] – отсутствие, дефицит re- [ri:] – обратно, повторно ex- [eks] – вне, выдвижение из ч-л

deoxygenated reoxygenation, recharge change - exchange

IV. Remember the following prepositional phrases

as in turn whereas wherever

по мере того, как в свою очередь тогда как где (бы ни)

V. Read and translate the following word combinations from the text

In its passage through the body; the aorta stems directly from the heart; blood flows; back flow; as they penetrate the tissues; muscles in the surrounding tissues; arteries split into narrow branches called arterioles; to be of no use to the body cells; to ensure reoxygenation; a second “loop”.

VI. Read and translate the following word combinations

1. to ensure: (syn: to provide, guarantee); to ensure the best results; to ensure smb success

2. to penetrate: the rain penetrated the soil; a ray of light penetrated the room (the darkness); the needle penetrated my skin; our troops penetrated the enemy’s lines; to penetrate deeply; a deep penetration.

3. to split: (split, split); (syn: to divide); the teacher split the class into two groups; we split the money three ways

4. to surround: the journalists surrounded him; surrounded by friends; the affair is surrounded in mystery

VII. Read and translate the text, part II.

Language work

I. Find in the text the sentences with the Passive Voice and translate them

II. Find in the text the following sentences and define the types of the Subordinate Clauses

1. The largest artery is the aorta which ….

2. The push from the heart ….

3. As they penetrate the tissues ….

4. The deoxygenated blood delivered to the heart along the veins ….

5. In the part of the system ….

III. What does “those” substitute in the sentence

Veins have walls compared with those of arteries.

IV. In the text find the sentences with the following words and reproduce them

To transport, to penetrate and split, to assist, to prevent, to deliver, to ensure, the only artery (vein).