IRENE GOLD BOARDS PART 1 PHYSIOLOGY EXAM WITH 100% CORRECT ANSWERS

IRENE GOLD BOARDS PART 1 PHYSIOLOGY EXAM WITH 100% CORRECT ANSWERS What 2 ways can blood enter the heart? - Answer ️️ -→Superior vena cava →Inferior vena cava Blood enters the heart via SVC and IVC but there is another exception. What is it? - Answer ️️ -Azygous veins The Azygous vein drains where? - Answer ️️ -SVC What part of the heart is this? → P-wave starts at sinoatrial node in crista terminalis → impulse travels to AV node - Answer ️️ -Right Atrium What happens when there is a SA node impulse to AV node and delayed (P-R) interval? - Answer ️️ -AV Nodal Delay What part of the heart is this? →end of diastole 120ml →tricuspid valve closes S-1 →heart sound: isovolumetric contraction - Answer ️️ -Right ventricle Name this EKG: → QRS complex (ventricular contract) - Answer ️️ -Ventricular depolarization What part of the heart is this? → mid-systole (halfway through)= enough pressure to blow open pulmonic semilunar valves - Answer ️️ -pulmonary artery What part of the heart is this? → blood exits via 2 pulmonary arteries to lungs - Answer ️️ -pulmonary artery What carries DE-O2 blood? - Answer ️️ -pulmonary artery What carries DE-O2 blood? - Answer ️️ -umbilical artery Ventricular filling is ____% passive and ____% active - Answer ️️ -80% passive 20% active from atrial contraction SA node impulse to AV node is shown as what on an ECG? - Answer ️️ -P-R interval At the end of diastole the right ventricle contains _______ amount of blood - Answer ️️ -150ml S1 = S2 = - Answer ️️ -→AV Valves - S1 →Semilunar - S2 QRS = - Answer ️️ -Ventricular depolarization + consequent contraction Isovolumetric contraction begins at ____ and ends as semilunar valves open - Answer ️️ -S1 Isovolumetric Relaxation begins at ____ and ends as the AV valves open - Answer ️️ -S2 The highest concentration of blood O2 is found in the - Answer ️️ -Cardiac system Pulmonary vein and umbilical vein in fetus are the only veins that carry - Answer ️️ -Oxygenated blo