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Questions and Answers
During the cardiac cycle, the first heart sound 'lub' (S1) is primarily produced by:
During the cardiac cycle, the first heart sound 'lub' (S1) is primarily produced by:
- Opening of the mitral valve
- Closure of the aortic valve
- Opening of the aortic valve
- Closure of the mitral valve (correct)
Which phase of the ventricular diastole does the SA node fire, resulting in atrial contraction and filling of the ventricles?
Which phase of the ventricular diastole does the SA node fire, resulting in atrial contraction and filling of the ventricles?
- Isovolumetric Relaxation
- Isovolumetric Contraction
- Ventricular Filling (correct)
- Rapid Ventricular Ejection
What is the term for the phase of the cardiac cycle where all valves are closed, and ventricular pressure rises, producing the sound 'lub' (S1)?
What is the term for the phase of the cardiac cycle where all valves are closed, and ventricular pressure rises, producing the sound 'lub' (S1)?
- Rapid Ventricular Ejection
- Ventricular Filling
- Isovolumetric Relaxation
- Isovolumetric Contraction (correct)
In which phase of the cardiac cycle is the aortic and pulmonic valves open, allowing blood to be ejected into the aorta and pulmonary trunk?
In which phase of the cardiac cycle is the aortic and pulmonic valves open, allowing blood to be ejected into the aorta and pulmonary trunk?
Which heart sound indicates reduced ventricular compliance and is often associated with ventricular hypertrophy?
Which heart sound indicates reduced ventricular compliance and is often associated with ventricular hypertrophy?
In a healthy heart, what follows opening of AV valves and indicates heart failure or volume overload?
In a healthy heart, what follows opening of AV valves and indicates heart failure or volume overload?
'Continuous murmurs' in heart sounds are due to:
'Continuous murmurs' in heart sounds are due to:
'Mid-to-late clicks' in heart sounds are typically a result of:
'Mid-to-late clicks' in heart sounds are typically a result of:
'Ejection clicks' immediately after the first heart sound (S1) can indicate:
'Ejection clicks' immediately after the first heart sound (S1) can indicate:
What occurs during 'Rapid Ventricular Ejection Phase' in the cardiac cycle?
What occurs during 'Rapid Ventricular Ejection Phase' in the cardiac cycle?
What initiates the 'Ventricular Filling' phase in the cardiac cycle?
What initiates the 'Ventricular Filling' phase in the cardiac cycle?
What is the approximate thickness of the right ventricle in the heart?
What is the approximate thickness of the right ventricle in the heart?
Which structure in the heart separates the right atrium and right ventricle?
Which structure in the heart separates the right atrium and right ventricle?
During ventricular ejection, which valves in the heart are open?
During ventricular ejection, which valves in the heart are open?
What is the function of the chordae tendineae in the heart?
What is the function of the chordae tendineae in the heart?
Which layer of the heart consists of cardiac muscle tissue and allows coordinated contractions?
Which layer of the heart consists of cardiac muscle tissue and allows coordinated contractions?
Which artery supplies the myocardium of the right ventricle, right atrium, sinoatrial node, and atrioventricular node?
Which artery supplies the myocardium of the right ventricle, right atrium, sinoatrial node, and atrioventricular node?
Where do the coronary veins mainly drain blood back into?
Where do the coronary veins mainly drain blood back into?
In which structure of the heart would you find the SA node, also known as the sinus rhythm pacemaker?
In which structure of the heart would you find the SA node, also known as the sinus rhythm pacemaker?
What is the primary function of Purkinje fibers in the heart?
What is the primary function of Purkinje fibers in the heart?
What is the function of the tricuspid valve in the heart?
What is the function of the tricuspid valve in the heart?
What is the role of intercalated discs in cardiac cells?
What is the role of intercalated discs in cardiac cells?
What is the main role of the aortic valve in cardiac function?
What is the main role of the aortic valve in cardiac function?
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