46 Questions
What is the position of the heart within the canine thorax?
Posterior and superior
Which surface features of the heart are prominently observed from the left view?
Right auricle
What separates the atria and ventricles in the heart?
Coronary groove
Which part of the heart points ventrocaudally and to the left?
Left ventricle
From the right view of the heart, what is the prominent structure observed?
Right atrium
What is the surface topography that encircles the base of the heart?
Coronary groove
What anchors the valve leaflets to the inner walls of the ventricles?
Chordae tendineae
Which of the following is NOT an interior feature of the RIGHT side of the heart?
Pulmonary valve
Where do the Marginal (parietal) cusps of the atrioventricular valves originate from?
Outer ventricular wall
What is the purpose of AV valves closing during systole?
Prevent backflow of blood into the atria
How are the AV valve cusps anchored to the inner walls of the ventricles?
Chordae tendineae
During which phase of the heart cycle does the Right AV valve prevent backflow of blood from the Right ventricle into the Right atrium?
Systole
Which valve is located between the left atria and the left ventricle?
Left AV Valve
What is the main function of the Aortic semilunar valve?
Prevents backflow of blood into the left ventricle during diastole
Through which vessel does oxygenated blood travel back to the heart?
Pulmonary veins
Where is the Pulmonary semilunar valve located?
Between right ventricle and pulmonary arteries
Which phase of the heart cycle involves heart rest?
Diastole
What is the primary function of the pulmonary circulation?
To facilitate gas exchange in the lungs
Which side of the heart receives oxygenated blood from the pulmonary circulation?
Left ventricle
What is the primary role of the right ventricle?
To pump deoxygenated blood to the lungs
Which blood vessel carries deoxygenated blood from the body tissues to the heart?
Vena cava
What is the primary function of the systemic circulation?
To deliver oxygenated blood to the body tissues
Which valve separates the right atrium from the right ventricle?
Tricuspid valve
Where do the septal cusps of the AV valves originate from?
Interventricular septal wall
What secures the chordae tendineae to the inner walls of the ventricles?
Papillary muscles
Which structure prevents backflow of blood into the atria during systole?
AV valves
What is the primary function of chordae tendineae in the heart?
Securing AV valve cusps to the ventricular walls
Which feature is NOT part of the interior of the RIGHT side of the heart?
Left atrioventricular valve
Through which circuit does gas exchange occur in the lungs?
Pulmonary circuit
Where does the right side of the heart receive deoxygenated blood from?
Systemic circulation
To which capillary bed does the portal vein connect, according to the text?
Liver
Where does the left side of the heart send blood into?
Systemic circulation
Which vessel receives blood from both cranial and caudal vena cavae?
Right atrium
What is the function of the Right AV Valve?
Preventing backflow into the right atrium
Which structure is prominently observed from the left view of the heart?
Right atrium
What separates the ventricles in the heart?
Interventricular grooves
From which view of the heart is the right atrium the prominent structure observed?
Right view
Where does the coronary groove lie in relation to the heart?
Encircles the base of the heart
Which side of the heart points ventrocaudally and to the left?
Apex
What is the main function of the atrioventricular (AV) valves during systole?
Prevent backflow into atria
Which valve prevents backflow of blood from the pulmonary trunk into the right ventricle during diastole?
Pulmonary semilunar valve
Which part of the heart pumps oxygenated blood to the body?
Left ventricle
What is the function of the aortic semilunar valve?
Prevent backflow from aorta to left ventricle
During which phase of the cardiac cycle does the left ventricle contract?
Systole
What is the primary role of the right atrium?
Receive deoxygenated blood from the body
Which blood vessels carry oxygenated blood from the lungs back to the heart?
Pulmonary veins and coronary arteries
Test your knowledge of canine heart anatomy with this quiz, covering topics such as heart position, surface and internal features, blood flow, blood supply, and cardiac auscultation. Prepared by Brady Little, DVM, MSc.
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