Blood flow through the heart follows which of the sequences listed below?
A. from left atrium, then mitral valve, right ventricle, aorta, left ventricle
B. from right atrium, then mitral valve, right ventricle, pulmonary trunk, left
ventricle.
C. from pulmonary trunk, then tricuspid valve, left...
Heart MCQ Test Questions & Answers
100% Correct!!
Blood flow through the heart follows which of the sequences listed below?
A. from left atrium, then mitral valve, right ventricle, aorta, left ventricle
B. from right atrium, then mitral valve, right ventricle, pulmonary trunk, left
ventricle.
C. from pulmonary trunk, then tricuspid valve, left atrium, aortic valve, aorta
D. from vena cava, then right ventricle, pulmonary trunk, left ventricle, aorta. - ANSWERD
What feature does cardiac muscle possess that is missing in skeletal muscle?
A. striations
B. multiple nuclei
C. voluntary control
D. intercalated discs - ANSWERD
What is the name of the valve between the left atrium and the left ventricle?
A. mitral valve
B. tricuspid valve
C. semi-lunar valve
D. aortic valve - ANSWERA
What is meant by a diastolic blood pressure of 100 mm Hg?
A. the maximum pressure at the start of the aorta during ventricular
contraction.
B. the minimum pressure at the start of the aorta before the start of a ventricular
contraction.
, C. the maximum pressure at the start of the aorta and pulmonary trunk during
ventricular contraction.
D. The minimum blood pressure measured when resting. - ANSWERB
What is the main function of mitral valve?
A. to increase the pressure inside the left atrium during systole
B. to prevent a drop in pressure in the aorta during diastole
C. to prevent backflow from left ventricle to left atrium during systole
D. to add additional blood from left atrium to left ventricle during atrial
systole - ANSWERC
The Frank-Starling law of the heart describes the proportional relationship
between which of the following pairs?
A. Stroke volume and cardiac output
B. Stroke volume and end-diastolic volume
C. The blood volume in the ventricles and stroke volume
D. Systemic vascular resistance and stroke volume - ANSWERC
If Sarah has a stroke volume of 70 ml and a cardiac output of 5950 ml/min,
which of the following is her heart rate (in beats/min)?
A. 70
B. 75
C. 80
D. 85 - ANSWERD
What will cause the sinoatrial (SA) node to depolarize more frequently?
A. Acetylcholine
B. Norepinephrine
C. Parasympathetic stimulation
D. Vagus nerve - ANSWERB
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