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🛍️ Shopee - 🛍️ Part 2 [page 398]

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Published	01/14/2024	The heart is at its most complete rest during the _____ phase of the cardiac cycle. A. Isovolumetric relaxation B. Atrial systole C. Rapid f…
Published	01/14/2024	Diastole is the period from the onset of ______ phase to the onset of ______ phase of the cardiac cycle.A. Reduced filling ---------- isovolumetric c…
Published	01/14/2024	Which of these natural-occurring substances converts angiotensinogen to angiotensin I? A. Angiotensinase  B. Angiotensinconverting enzyme (ACE) …
Published	01/14/2024	Which of the following will LEAST likely give rise to hypotension and bradycardia?A. rise in pulmonary artery pressure  B. rise in venous pressur…
Published	01/14/2024	This is true of the rapid ejection phase of the cardiac cycle. A. 50% of the stroke volume is during this phase B. It begins with the opening of the …
Published	01/14/2024	Short term regulation of the systemic circulation is achieved initially by activity of theA. neural reflexesB. motor cortex C. paracrine agents D. ang…
Published	01/14/2024	Which of the following reflexes will most likely be activated in exercise to increase oxygen supply to active muscles?A. Carotico-aortic sinus reflex…
Published	01/14/2024	According to Boron the pacemaker potential is due to interaction of the funny current and the:A. K+ efflux and Ca++ influx via L channels  B…
Published	01/14/2024	Which of the following associations is correct, between heart sounds and the areas where they are best heard?A. S1 – 4th intercostal space, along le…
Published	01/14/2024	Compared to the 2nd heart sound, the 1st heart sound has a:A. shorter durationB. louder soundC. sharp qualityD. higher pitch
Published	01/14/2024	The greater the velocity of flow in a given artery, the lower the lateral pressure distending the walls. This is in accordance with which of the foll…
Published	01/14/2024	Which of these represents A-V conduction time?A. QRS B. PR C. QT D. RR
Published	01/14/2024	What is the primary stimulus for the release of antidiuretic hormone?A. Increased ECF osmolarity B. Increased blood volume C. Decreased blood volume D…
Published	01/14/2024	Which of the following associations between phases of fast response action potential and their primary causes is correct (according to Guyton)?A. Ups…
Published	01/14/2024	This concept states that the different layers of molecules of blood move parallel to each other into longitudinal streamlinesA. Reynolds numberB. Poi…
Published	01/14/2024	If the right atrium is enlarged, which of these ECG intervals would be prolonged?A. QT B. QRS C. RR D. PR
Published	01/14/2024	The normal mean QRS vector is directed downward and:A. Anteriorly to the right B. Anteriorly to the left C. Posteriorly to the right D. Posteriorly to…
Published	01/14/2024	Which of the following statements is true as regards capillaries?A. When precapillary sphincters are dilated, RBC pass through via shear thinning&nbsp…
Published	01/14/2024	Which of these conditions can give rise to systolic murmurs?A. Pulmonary insufficiency  B. Tricuspid stenosis C. Aortic stenosis D. Mitral stenos…
Published	01/14/2024	Sudden reduction in intracranial pressure causing a fall in systemic BP forms the premise of which reflex?A. McDowall B. Bezold-Jarisch C. Cushing D.…
Published	01/14/2024	Alexis counted 3 small squares from the onset of the q wave to the end of the s wave. His computed QRS interval is ______msecA. 0.075 . 0.09 C. 0.12D…
Published	01/14/2024	As blood flows away from the heart, the mean blood pressure has the greatest decline across which class of vessels?A. Capillaries B. Veins C. Arterio…
Published	01/14/2024	During inspiration the S2 may be normally spit because of:A. Early closure of aortic valve  B. Delayed closure of aortic valve C. Early…
Published	01/14/2024	Arterial pressure is best described as a balance between:A. Heart rate and peripheral resistance  B. Systolic and diastolic pressureC. Cardiac i…
Published	01/14/2024	If the mean P vector is at (+) 80 degrees, the P wave is upright in the following lead or leads:A. I, II, and III B. I and II C. I, II, III,…
Published	01/14/2024	Which of the following associations between limb leads and the locations of their positive electrodes is correct?A. Lead III – (+) 120 degrees B. Lea…
Published	01/14/2024	Which of the following immediately precedes release of renin?A. low perfusion pressure B. decrease in renal blood flow C. decreased stretch …
Published	01/14/2024	The amount of blood present in the ventricle during the isovolumetric relaxation phase of the cardiac cycle represents the:A. Residual volumeB. Systo…
Published	01/14/2024	These substances can enhance ventricular contraction.A. Angiotensin II and epinephrineB. Angiotensin II, epinephrine, glucagon and thyroid hormone&nbs…
Published	01/14/2024	What hemodynamic change will occur in a blood vessel with a turbulent flow?A. The slope of the relationship between flow and perfusion pressure increa…
Published	01/14/2024	Cardiac consumption of oxygen is primarily dependent on:A. Intramyocardial tension, myocardial contractile state and heart rate B. Intramyocardia…
Published	01/14/2024	Dr. Gigaii suspected her patient had paralysis of the papillary muscles of the left ventricle. If Dr Gigaii is correct, which heart murmur would she …
Published	01/14/2024	When an individual who is in the recumbent position for quite some time decides to stand abruptly, he experiences orthostatic hypotension. Which of t…
Published	01/14/2024	Clinically, the period of systole is from:A. S1 to S2  B. S2 to the next S1 C. S1 to the next S1 D. S2 to the next S2
Published	01/14/2024	Which physiologic determinant of blood pressure when increased will bring about an increase in the diastolic pressure:A. Blood viscosityB. Peripheral…
Published	01/14/2024	According to Boron the upstroke phase of the slow-response action potential is due to:A. Ca++ influx via T channelsB. Ca++ influx via L channels and N…
Published	01/14/2024	If the action potential cannot pass through the left bundle branch (left bundle branch block) which of these will occur?A. Right axis deviation occur…
Published	01/14/2024	The aortic pulse pressure increases with a person’s age. The increased pulse pressure most commonly results from:A. Increased left ventricular stroke…
Published	01/14/2024	High levels of this ion in the blood may cause the heart to stop in systole.A. Sodium  B. Calcium C. Magnesium D. Potassium
Published	01/14/2024	Mr Hart is diagnosed to have a sick SA node and his heart is now driven by the AV node. If his heart rate is counted it is expected to be between ___…
Published	01/14/2024	Aortic pressure is highest at the onset of________ phase of the cardiac cycle.A. Isovolumetric contraction B. Rapid ejection C. Isovolumetri…
Published	01/14/2024	This is true of the isovolumetric relaxation phase of the cardiac cycle.A. Ventricle contains the end diastolic blood volume B. Ventricles are m…
Published	01/14/2024	In the presence of this condition, the heart may stop in diastoleA. HypernatremiaB. Hypercalcemia C. Hyperkalemia D. Hypocalcemia
Published	01/14/2024	Impulse conduction is fastest in the:A. Terminal Purkinje network B. Bundle of His C. AV node D. Bundle branches
Published	01/14/2024	Which organs/system can influence blood pressure by affecting plasma protein concentration?A. hematopoietic organs and liverB. respiratory system&nbsp…
Published	01/14/2024	As regards opening and closing of valves during the cardiac cycle, which of the following is true?A. Aortic valve opens earlier than pulmonary valveB.…
Published	01/14/2024	Which of the following is true of the pacemaker potential?A. Exhibited by P cells and Purkinje cellB. Requires an electrical stimulus to initiate it…
Published	01/14/2024	Which heart sounds will be normally heard over the entire anterior chest wall of an overweight 30- year old man?A. S1 B. S1, S2, and S3 C. No heart s…
Published	01/14/2024	Which of these cells exhibit pacemaker potentials?A. Purkinje cells B. Atrial and ventricular muscles C. P cells D. P cells and Purkinj…
Published	01/14/2024	Increase in concentration of these ions will cause vasodilation.A. H+ and Mg++ only B. Ca++, H+, K+ and Mg++ C. K+ and Mg++ only D. H+, K+ and Mg++ on…
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