28 Questions
What is the main function of the atria in the heart?
Receiving blood from the circulation
Where is the interventricular septum located?
Between the right and left ventricles
What is the function of the fibrous skeleton in the heart?
Prevents overdilation of valve openings
Where is the epicardium located in the heart wall?
Visceral pericardium
Which part of the fibrous skeleton surrounds all four valves in the heart?
Fibrous rings around atrio-ventricular, pulmonary, and aortic orifices
What is the location of the heart within the pericardium?
Behind the body of sternum and costal cartilages
What are the external markings used to identify regions of the heart?
Apex and base
What is the function of left ventricle in comparison to the right ventricle?
Exerts more pumping force
What features distinguish the atria from ventricles in terms of their functions?
Function as receiving chambers for blood
What does the coronary sulcus separate in the heart?
Atria from ventricles
Which chamber of the heart receives deoxygenated blood from the inferior vena cava below and from the superior vena cava above?
Right atrium
What is the function of the ventricles in the heart?
Discharging chambers of the heart
Which valve guards the passage of blood from the left atrium to the left ventricle?
Mitral (bicuspid) valve
Which chamber of the heart has walls that are 3X thicker than those of the right ventricle?
Left ventricle
What is the smooth-walled outflow tract of the right ventricle called?
Infundibulum
What prevents backflow of blood into the atria when ventricles contract?
Atrioventricular valves
Which valve separates the right ventricle from the pulmonary arteries?
Pulmonary valve
Where are trabeculae carneae found in the heart?
In the walls of the left ventricle
Which valve separates the left ventricle from the aorta?
Aortic valve
Which chamber of the heart is responsible for receiving deoxygenated blood from the inferior vena cava and the superior vena cava?
Right atrium
What is the function of the right ventricle in the heart?
Discharges deoxygenated blood to the pulmonary trunk
What is the purpose of the mitral (bicuspid) valve in the heart?
Guards the passage of blood from the left atrium to the left ventricle
Where is the tricuspid valve located in the heart?
Between the right atrium and the right ventricle
What is the purpose of semilunar valves in the heart?
Prevent backflow of blood into the ventricles
What structures are attached to chordae tendineae in the heart?
Papillary muscles of the ventricle wall
Which part of the heart receives blood from four pulmonary veins that drain posteriorly?
Left atrium
What is the main function of the ventricles in the heart?
Discharge blood to pulmonary trunk and aorta
"Lub-dup" heart sounds are primarily due to which event in the heart?
Semilunar valves opening and closing
Test your knowledge of heart anatomy and position with this quiz. Questions cover the external markings, septums, chambers, and valves of the heart.
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