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Questions and Answers
What is the approximate weight of the heart?
What is the approximate weight of the heart?
- 350-450 grams
- 250-350 grams (correct)
- 100-200 grams
- 150-250 grams
Where does the heart rest in the body?
Where does the heart rest in the body?
- Inferior to the vertebral column
- Posterior to the diaphragm
- Lateral to the diaphragm
- Anterior to the sternum (correct)
What is the function of the fibrous pericardium?
What is the function of the fibrous pericardium?
- Prevents overstretching of the heart, provides protection and anchors the heart in the mediastinum (correct)
- Encloses the heart in a double-walled sac
- Connects the heart to the lungs
- Allows vigorous and rapid contraction of the heart
What is the size of the heart relative to a human fist?
What is the size of the heart relative to a human fist?
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What does the pericardium do?
What does the pericardium do?
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Which layer of the heart wall is responsible for the pumping action?
Which layer of the heart wall is responsible for the pumping action?
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What is the space that contains a few millimeters of pericardial fluid called?
What is the space that contains a few millimeters of pericardial fluid called?
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Which chamber of the heart is separated from the left ventricle by the interventricular septum?
Which chamber of the heart is separated from the left ventricle by the interventricular septum?
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The left ventricle encounters 5 times as much resistance to blood flow as it serves which circuit?
The left ventricle encounters 5 times as much resistance to blood flow as it serves which circuit?
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Which valve allows blood to pass from the left atrium into the left ventricle?
Which valve allows blood to pass from the left atrium into the left ventricle?
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