front 1 The pace maker of the heart? | back 1 SA node |
front 2 Found in the inter ventricular septum? | back 2 AV bundle |
front 3 Network found in the ventricular myocardium? | back 3 Purine fibers |
front 4 The point in the conduction system of the heart were the impulse is temporarily delayed? | back 4 AV node |
front 5 Prevents back flow into the left ventricle? | back 5 Aortic valve |
front 6 Prevents flow into the right atrium? | back 6 Tricuspid |
front 7 Prevents back flow into the left atrium? | back 7 Mitral valve |
front 8 Prevents back flow into the right ventricle? | back 8 Pulmonary valves |
front 9 AV valve with two flaps? | back 9 Mitral valve |
front 10 AV valve with three flaps? | back 10 Tricuspid valve |
front 11 Heart muscle is deprived by oxygen? | back 11 Ischmia |
front 12 Deaths of heart muscle cells? | back 12 Ectopic focus |
front 13 A condition of rapid and irregular or out-of-phase contraction of heart muscle cells? | back 13 Fibrilation |
front 14 Total heart relaxation? | back 14 Quiescent period |
front 15 Normal sounds are caused by which of the following events?
| back 15 Closure of the heart valves |
front 16 Which of the following events below does not occur when the semilunar valves are open?
| back 16 Ventricles are in diastole |
front 17 Hemorrhage with a large loss of blood causes | back 17 A lowering of blood pressure due to change in cardiac output |
front 18 The left ventricle wall of the heart is thicker than the right wall in order to? | back 18 Pump blood with greater pressure |
front 19 Damage to the _________ is referred to as a heart block. | back 19 AV node |
front 20 The P wave of a normal electrocardiogram indicates | back 20 Atrial depolorization |
front 21 Blood within the pulmonary veins returns to the? | back 21 Left atrium |
front 22 Small muscle masses attached to the chordae tendineae are the | back 22 Papillary muscles |
front 23 The term for pain associated with deficient blood delivery to the heart that may be caused by the transient spasm of coronary arteries is? | back 23 Angina pectoris |
front 24 To ausculate the aortic semilunar valve, you would place your stethoscope in the __________. | back 24 Second intercostal space to the right of the sternum |
front 25 The source of blood carried to capillaries in the myocardium would be the ________. | back 25 Coronary arteries |
front 26 The fact that the left ventricle of the heart is thicker than the right ventricle reveals that it_________. | back 26 Pumps blood against a greater resistance |
front 27 Which of the following factors does not influence heart rate?
| back 27 Skin color |
front 28 Which of the following is NOT an age-related change affecting the heart?
| back 28 Thinning of the valve flaps |
front 29 If cardiac muscle is deprived of its normal blood supply, damage would primarily result from _________. | back 29 Decreased delivery of oxygen |
front 30 If the length of the absolute refractory period in cardiac muscle cells was the same as it is for skeletal muscle cells _________. | back 30 Titanic contractions might occur ,which would stop the hearts pumping action |
front 31 Norepinephrine acts on the heart by ________. | back 31 Causing threshold to be reached more quickly |
front 32 If the vagal heart nerves to the heart were cut ,the results would be that ________. | back 32 The heart rate would increase by about 25 beats per minute |
front 33 The foremen ovals connects to _________. | back 33 The two atria in the fetal heart |
front 34 Which vessels of the heart receives blood during right ventricle systole? | back 34 Pulmonary trunk |
front 35 Which of these vessels receives blood during ventricular systole?
| back 35 Both the aorta and pulmonary trunk |
front 36 Which of the following is NOT part of the conduction system of the heart?
| back 36 AV valve |
front 37 The tricuspid valve is closed when or while ? | back 37 When the ventricle I in systole |
front 38 When viewing a dissected heart , it is easy to visually discern the right and left ventricles by_________. | back 38 Noticing the thickness of the ventricle walls |
front 39 Select the correct statement about the heart valves
| back 39 The AV valves are supported by chordae tendineae so that regurgitation of blood into the atria during ventricular contraction does not occur. |
front 40 Select the CORRECT statement about the function of myocardial cells.
| back 40 The entire heart contracts as a unit or it does not contract at all. |
front 41 Select the correct statement about the structure of the heart wall.
| back 41 The myocardium is the layer of the heart that actually contracts. |
front 42 Compared to skeletal muscle, cardiac muscle ________. | back 42 Has gap junctions that allow it to act as a functional syncytium. |
front 43 During the period of ventricular filling _________. | back 43 Blood flows passively through the atria and the open AV valves into the ventricles |
front 44 The second heart sound is heard during which phase of the cardiac cycle ? | back 44 Isovolumetric relaxation |
front 45 The time of day most hazardous for heart attacks is ___________. | back 45 Morning |
front 46 If we were able to artificially alter the membrane permeability of pacemaker cells So that sodium influx is more rapid,________. | back 46 Threshold is reached more quickly and heart rate would increase. |
front 47 Select the correct statement about cardiac output. | back 47 A slow heart rate increases end diastolic volume, stroke volume,and force of contraction. |
front 48 During contraction of the heart muscle cells ________. | back 48 Some calcium enters the cell from the extra cellular space and triggers the release of larger amounts of calcium from intracellular stores. |
front 49 Isovolumetric contraction ________. | back 49 Refers to the short period during ventricular systole when the ventricles are completely closed chambers. |
front 50 Commotion cordis is heart failure due to a ________. | back 50 Relatively mild blow to the chest that occurs during a vulnerable interval(2ms) when the heart is repolarizing . |
front 51 The enlarged coronary vessel outside the heart that empties blood into the right atrium is the _________. | back 51 Coronary sinus |
front 52 What structure is the fetal heart allows blood to flow from the right atrium directly to the left atrium? | back 52 Forman ovale |
front 53 The ECG T wave interval represents ___________. | back 53 Atrial repolarization |
front 54 CO= _______ x SV. | back 54 HR |
front 55 The _________ membrane cover the heart. | back 55 Epicardium |
front 56 The _________ valve of the heart has three valves with chordae tendinae. | back 56 Tricuspid |
front 57 The _______and________ valves of the heart have NO chordae tendinae attached. | back 57 Aortic & Pulmonary |
front 58 Define systole and diastole? | back 58 Systole refers to the periods of contraction ,
|