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Questions and Answers
In humans, where is the heart located?
In humans, where is the heart located?
- Behind the liver in the abdominal cavity
- Above the stomach in the abdominal cavity
- Between the lungs in the mediastinum (correct)
- In the upper chest, near the shoulders
How many chambers does the heart of most reptiles have?
How many chambers does the heart of most reptiles have?
- Five chambers
- Three chambers (correct)
- Four chambers
- Two chambers
What prevents backflow of blood in the heart?
What prevents backflow of blood in the heart?
- Pericardium
- Heart valves (correct)
- Pacemaker cells
- Blood vessels
What determines the rhythm of blood pumping in the heart?
What determines the rhythm of blood pumping in the heart?
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What are the three layers that make up the wall of the heart?
What are the three layers that make up the wall of the heart?
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