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Chapter 20

Lab

QuestionAnswer
Which heart chambers contract as a result of SA node stimulation The atria
Which chambers contract after the action potential reaches the Purkinje fibers the ventricles
Which chambers of the heart are directly impacted by the electrical events associated with the P wave the atrias
What region of the ECG represents atrial systole P-Q segment
What heart chambers contract in response to the electrical events of the QRS complex ventricles
What region of the ECG represents ventricular ejection S-T segment
Which of the following components of an ECG represent depolarization of heart chambers? P wave, and QRS complex
In a single cardiac cyce, the ventricles fill to 130 mL, eject 70 mL, and contain 60 mL left over before filling again, What is the stroke volume (SV) 60
During which phase of the cardiac cycle is the first heart sound heard? Ventricular systole
Which phase of the cardiac cycle is the second heart sound heart Ventricular diastole
If you head an abnormal sound in between the two normal heart sounds which phase of the cardiac cycle is the abnormal sound occurin Ventricular systole
If you hear an abnormal second heart sound which valves could be affected Aortic semilunar valve and pulmonary semilunar valve
In a patient with normal heart sounds which of the following would you hear in the fifth left intercostal space at the mid-clavicular line? a loud and strong "Lubb" sound
How are an interval and segment different An interval measures at least one wave and one flat area, while a segment includes only a flat area of the tracing
Describe the electrode placements in the Einthoven's triangle one on each wrist and one on the left ankle
Created by: akc0204
 

 



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