The heart

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What are the three layers of the heart?
1•Pericardium – thin outer protective sack 2•Myocardium – specialised cells making up the thick muscular wall 3•Endocardium – thin inner lining of the heart
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Inside the heart there are four chambers – two on the left side and two on the right, what are these called?
•The two small upper chambers are called the atria •The two larger lower chambers are called the ventricles
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The left and right sides of the heart are divided by a muscular wall called?
this is called the septum.
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The movement of blood around the body, pumped by the heart, is called?
circulation
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For your heart to keep pumping regularly, it needs an electrical supply. This is provided by a special group of heart cells called?
the sinus node, which is also known as your heart’s natural pacemaker
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Some people are born with hearts that have not developed properly before birth - this is called?
congenital heart disease
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Other cards in this set

Card 2

Front

Inside the heart there are four chambers – two on the left side and two on the right, what are these called?

Back

•The two small upper chambers are called the atria •The two larger lower chambers are called the ventricles

Card 3

Front

The left and right sides of the heart are divided by a muscular wall called?

Back

Preview of the front of card 3

Card 4

Front

The movement of blood around the body, pumped by the heart, is called?

Back

Preview of the front of card 4

Card 5

Front

For your heart to keep pumping regularly, it needs an electrical supply. This is provided by a special group of heart cells called?

Back

Preview of the front of card 5
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