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CH 18 QUESTION

END OF CHAPTER

QuestionAnswer
WHEN SEMILUNAR VALVES ARE OPEN, WHAT IS OCCURRING? AV VALVES CLOSED.VENTRICLES ARE IN SYSTOLE,BLOOD ENTERS AORTA,BLOOD ENTERS PULMONARY ARTERIES
THE PORTION OF THE INTRINSIC CONDUCTION SYSTEM IS LOCATED IN THE INTERVENTRICULAR SEPTUM IS THE?? AV BUNDLE
AN ECG PROVIDES INFORMATION ABT ?? MOVEMENT OF THE EXCITATION WAVE ACROSS THE HEART
THE SEQUENCE OF CONTRACTION OF THE HEART CHAMBERS IS?? BOTH ATRIAS FOLLOWED BY BOTH VENTRICLES
THE FACT THAT THE LEFT VENTRICLE WALL IS THICKER THAN THE RIGHT REVEALS THAT?? PUMPS BLOOD AGAINST GREATER RESISTANCE
THE CHORDAE TENDINAE..... PREVENT THE AV VALVE FLAPS FROM EVERTING
IN THE HEART WHICH OF THE FOLLOWING APPLY.... ACTION POTENTIALS R CONDUCTED FROM CELL TO CELL ACROSS MYOCARDIUM VIA GAP JUNCTION,SA NODE SETS THE PACE FOR HEART AS WHOLE, SPONTANEOUS DEPOLARIZATION OF CARDIAC CELLS CAN OCCUR IN THE ABSENCE OF NERVE STIMULATION
THE ACTIVITY OF THE HEART DEPENDS ON INTRINSIC PROPERTIES OF CARDIAC MUSCLE & ON NEURAL FACTORS THUS.... VAGUS NERVE STIMULATION OF THE HEART REDUCES HR, SYMPATHETIC NERVE STIMULATION OF THE HEART DECREASES TIME AVAILABLE FOR VENTRICULAR FILLING,SYMPATHETIC STIMULATION OF HEART INCREASES ITS FORCE ON CONTRACTION
FRESHLY OXYGENATED BLOOD IS FIRST RECEIVED BY THE LEFT ATRIUM
NORMAL HEART SOUNDS ARISE CHIEFLY FROM TURBULENT HEART FLOW DURING THE CLOSING OF THE HEART VALVES
CARDIAC CYCLE EVENTS OCCURRING DURING THE HEART BEAT
MID TO LATE DIASTOLE VENTRICLES FILL & ATRIA CONTRACT
EARLY DIASTOLE VENTRICLES R RELAXED & R CLOSED CHAMBERS TIL THE ATRIAL PRESSURE EXCEEDS VENTRICULAR PRESSURE, FORCING AV VALVES OPEN
PRESSURE CHANGES PROMOTE BLOOD FLOW & VALVE OPENING & CLOSING
BLOOD DELIVERY TO MYOCARDIUM OCCURS DURING HEART RELAXATION
CONDUCTION SYSTEM OF THE HEART CONSISTS OF.... SA & AV NODES, AV BUNDLE & BUNDLE BRANCHES & PURKINJE FIBERS. THIS SYSTEM COORDINATES DEPOLARIZATION OF HEART & ENSURES THE HEART BEATS AS A UNIT
SPONTANEOUS DEPOLARIZATION SA NODE & ACTS AS HEARTS PACEMAKER, IT SETS THE SINUS RHYTHM
P-WAVE REFLECTS ATRIAL DEPOLARIZATION
QRS COMPLEX INDICATES VENTRICULAR DEPOLARIZATION
CONGESTIVE HEART FAILURE OCCURS WHEN THE PUMPING ABILITY OF THE HEART IS INADEQUATE TO PROVIDE NORMAL CIRCULATION OF HEART RIGHT HEART FAILURE LEADS TO SYSTEMIC EDEMA LEFT HEART FAILURE RESULTS IN PULMONARY EDEMA
Created by: 1298518297
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