n an EKG reading: Othe P wave corresponds to the AV node firing. the QRS complex corresponds to a time when ventricular pressure is greater than atrial pressure. OWhen in sympathetic mode, the AV Bundle will be receiving impulses at a faster rate then when in parasympathetic mode.

The maximum amount of blood within the left ventricle just before the start of isovolumic contraction is called the ____________________ (EDV, ESV, EF).  The amount of blood found within the left ventricle just after ejection and before the left AV valves opens is called the _____________________ (EDV, ESV, EF).  Clinically, one of the best parameters used to measure cardiac function is the EF.  In terms of EDV and ESV, what simple equation would give you the EF?  If you had an echocardiogram and found that your EDV was 100 cc and your ESV was 30 cc, what would be your EF?  EDV = end-diastolic volume, ESV = end-systolic volume, EF = ejection fraction

What causes the atrioventricular valves to open during this phase? (response can be in 1-3 sentences nothing more please.)

You are learning to read electrocardiograms. You know that the patient you are examining has a pathology affecting the depolarization of his ventricles, therefore you're looking for a change in what portion of his EKG? The P wave O The T wave O The QRS complex "The P wave" or "The T wave" but not "The QRS complex". None of these would be altered