Topic: The Cardiovascular system.

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Date: 07. 02. 2022

Mail: mmkenglish@mail. ru

Do the tasks in copybook and send photos

Topic: The Cardiovascular system.

Глоссарий:

to pump – качать

approximately – приблизительно

to remove the waste products – удалять

использованные продукты

cardiac cycle – сердечный цикл

cavity – полость

chambers – камеры

atria – предсердие

ventricle – желудочек

superior vena cava – верхняя полая вена

inferior vena cava – нижняяполаявена

coronary sinus – коронарныйсинус

right atrioventicular valve – правыйпредсердно-

желудочковыйклапан

reoxygenated – перенасыщатькислородом

pulmonary veins – легочныевены

to nourish – питать

blood stream – кровоток

cardiac output – минутный объем сердца

Task: Read and translate the text.

Make up 10 questions to the text.

The heart is one of the most important organs in the human body. It pumps blood throughout the body, beating approximately 72 times per minute of our lives. The heart pumps the blood, which carries all the vital materials which help our bodies function and removes the waste products that we do not need.

The heart is a muscle. Like any other muscle in the human body, it contracts and expands. Each time the heart contracts it does so with all its force. In skeletal muscles, the principle of " gradation" is present. The pumping of the heart is called the Cardiac Cycle, which occurs about 72 times per minute. This means that each cycle lasts about eight-tenths of a second. During this cycle the entire heart actually rests for about four-tenths of a second.

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