Условие:
The heart is simply a pump which circulates blood throughout the body. ribes called blood vessels carry it from the heart to all parts of the body and back again
This round trip is known as the circulation 3
Vessels carrying blood away from the heart are known as arteries and those returning blood to the heart are known as veins.
The heart pumps blood round the body about 70 times a minute in adults Bhe heartbeats can be felt as the pulse' where certain arteries the iust beneath the skim
and the most well-known place where
this occurs/is at the wrist 3
The heart lies in the chest immediately behind the breast bone thr well, sof tha chambs i the and tiet, separated trom cach other by a
into upper and lower compart-
ments which communicate with each other' by valves. Each upper com$ partment is called an atrium and each lower a ventricle. Note that there, vo is no communication at all between the left and right sides of the heart.
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Heart failure, or cardiac arrest, means that the heart has stopped beating. This, of course, means that no blood is being pumped round the body and death occurs in a few minutes. But as the heart is just a simple pump, it can be made to beat artiticially by rhythmically applying pressure to the chest. This squeezes the heart between the breast bone and forces blood out the heart into the circulation!When pressure on the chest has been relaxed, blood returns to the heart again.
Exercise 4, Answer these questions:
What is heart?
What are tubes carrying blood called?
Where can the heartbeats be felt?
Where does the heart lie?
S. What does the heart consist of?
What compartments is each chamber divided into?
What are the compartments called?
What does heart failure mean?
Can the heart be made to beat artificially?
When does blood return to the heart again?
Решение:
1. Что такое сердце? Сердце - это насос, который перекачивает кровь по всему телу. 2. Как называются трубки, перекачивающие кровь? Трубки, перекачивающие кровь, называются кровеносными сосудами. 3. Где можно почувствовать сердцебиение? Сердцебиение можно почувствовать в определенных артериях, расположенных непосредственно под кожей, ...