5 Questions
In humans, where is the heart located?
Between the lungs in the mediastinum
How many chambers does the heart of most reptiles have?
Three chambers
What prevents backflow of blood in the heart?
Heart valves
What determines the rhythm of blood pumping in the heart?
Pacemaker cells in the sinoatrial node
What are the three layers that make up the wall of the heart?
Epicardium, myocardium, and endocardium
Test your knowledge about the human heart with this quiz! Explore the anatomy, functions, and importance of this vital organ in the circulatory system. See how well you understand its role in pumping blood and providing oxygen and nutrients to the body.
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