5 Questions
The heart in humans, other mammals, and birds is divided into how many chambers?
Four chambers - upper left and right atria and lower left and right ventricles.
What prevents backflow of blood in a healthy heart?
Heart valves prevent backflow of blood.
In which node are the pacemaker cells responsible for the rhythm of the heart located?
The pacemaker cells are located in the sinoatrial node.
What are the three layers that make up the wall of the heart?
Epicardium, myocardium, and endocardium.
What is the theory behind the asymmetric orientation of the heart in all vertebrates?
According to one theory, this is caused by a developmental axial twist in the early embryo.
Test your knowledge of the human heart with this interactive quiz. Explore the anatomy, function, and importance of the heart in the circulatory system. Learn about its size, location, and vital role in maintaining overall health.
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