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20 Cards in this Set
- Front
- Back
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The Cardiac Cycle _____. |
represents all of the events of the heart during one heartbeat
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The QRS complex of the electrocardiogram begins ________.
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just prior to ventricular contraction
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Heart sounds are associated with ________.
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turbulent blood flow, closure of the AV valves, and closure of the semilunar valves
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The semilunar valves are forced open when ________.
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ventricular pressure exceeds the pressure in the large arteries leaving the heart
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Is it possible to determine blood pressure from a cardiac cycle graph? Why or why not?
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Yes, both systolic and diastolic pressures can be read.
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Which phase of the cardiac cycle is longest?
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Ventricular diastole
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Pulse pressure ________.
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is the difference between systolic and diastolic pressure
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By taking a pulse you can determine ________.
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pulse rate, regularity of the pulse, and strength of the pulse
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Blood pressure is ________.
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the pressure of the blood against the blood vessel walls
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If you cut yourself and blood spurts rhythmically from the injury, you have probably cut ________.
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an artery
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By convention, the cardiac cycle graphs the events of the left side of the heart. How would the graphs change if we looked, instead, at the right side of the heart?
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Pressure in the right ventricle would be much less, and all other events would be about the same.
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What does the cardiac cycle reveal about the opening and closing of the heart valves?
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The AV valves close first, then the semilunars open and close, then the AV valves open.
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The first heart sound heard during the cardiac cycle is associated with ________.
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closure of the AV valves
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In comparing the volume of blood moved from atria to ventricles when the atria contract with the volume of blood ejected from the heart when the ventricles contract, we observe that ________.
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atrial contractions move less blood into the ventricles than ventricles eject
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Heart murmurs ________.
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often indicate problems with heart valves, can be used to diagnose failure of the heart valves to close tightly, and can be used to diagnose constricted heart valves
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The first heart sounds are best heard ________.
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in the 5th intercostal spaces, at various distances from the sternal margins
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The first of the two numbers measured when taking the blood pressure represents ________.
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systolic pressure
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The mean arterial pressure for a patient whose blood pressure is 110/80 is ________.
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90 mm Hg
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Venous pressure ________.
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is much lower than arterial pressure
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During moderate exercise, ________.
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heart rate and blood pressure increase |
