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12 Cards in this Set
- Front
- Back
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where is the heart |
within the inferior mediastinum |
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what is the mediastinum |
the middle cavity of the thorax |
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base |
superior end points towards right shoulder |
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apex |
inferior end points towards left hip rests on diaphragm |
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what is the size of the heart |
a closed fist |
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weight of heart |
less than 1 pound |
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how much does it beat |
about 2.5 billion times in life |
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what is the membrane around the heart |
pericardium pericardial sac |
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what are the 3 layers of the heart wall |
epicardium myocardium endocardium |
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epicardium |
outer layer |
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myocardium |
thick muscular thing around heart |
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endocardium |
inner layer lines heart and chamber |
