The Heart And Its Function

83 Questions  I  By TamaraBrown
CHAPTER 17

  
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1.  Increase in the strength of myocardial contraction that occurs without stretching the heart
A.
B.
C.
2.  Increase in the strength of myocardial contraction that occurs when the heart is· stretched
A.
B.
C.
3.  Phase of the cardiac cycle that refers to contraction of the heart muscle
A.
B.
C.
4.  Sequence of events that occurs in the heart in one beat
A.
B.
C.
5.  Beats/min
A.
B.
C.
6.  Coronary blood flow is greatest during this phase of the cardiac cycle
A.
B.
C.
7.  Determined by heart rate x stroke volume
A.
B.
C.
8.  Amount of blood pumped by the heart in 1 minute
A.
B.
C.
9.  70mL/bea
A.
B.
C.
10.  The capacity to increase cardiac output above the resting cardiac output
A.
B.
C.
11.  What the ventricles are" doing" when the atrioventricular (AV) valves are closed and the semilunar valves are open
A.
B.
C.
12.  Amount of blood pumped by the ventricle per beat
A.
B.
C.
13.  Its duration is 0.8 second with a normal resting heart rate.
A.
B.
C.
14.  The phase of the cardiac cycle that refers to relaxation of the ventricles
A.
B.
C.
15.  Ability of the myocardium to match venous return and cardiac output on a beat-to-beat basis
A.
B.
C.
16.  Phase of the cardiac cycle that shortens most in response to tachycardia
A.
B.
C.
17.  What the ventricles are "doing" when the AV valves are open and the semilunar valves are closed
A.
B.
C.
18.  5000mL/min
A.
B.
C.
19.  Forms the basis of Starling's law of the heart
A.
B.
C.
20.  The percentage of the end-diastolic volume (EOV) that is pumped
A.
B.
C.
21.  The resistance or opposition to the flow of blood
A.
B.
C.
22.  The amount of blood in the ventricles at the end of its resting phase
A.
B.
C.
23.  Change in the rate or speed of the cardiac impulse that travels through the conduction system of the heart
A.
B.
C.
24.  Example hypertension
A.
B.
C.
25.  Venous return
A.
B.
C.
26.  Also called preload
A.
B.
C.
27.  Change in myocardial contractile force that is not caused by stretch
A.
B.
C.
28.  Change in heart rate
A.
B.
C.
29.  Three-pillow dyspnea
A.
B.
C.
30.  Hepatomegaly (enlarged liver), distended jugular veins aVOs), pedal edema
A.
B.
C.
31.  Pulmonary edema
A.
B.
C.
32.  Consequence of chronic lung disease such as emphysema and asthma
A.
B.
C.
33.  Backup within the pulmonary capillaries causing water to accumulate in the lungs
A.
B.
C.
34.  Cyanosis, dyspnea, orthopnea
A.
B.
C.
35.  Most likely to say "1 can't breathe
A.
B.
C.
36.  Most likely to develop in response to chronic systemic hypertension
A.
B.
C.
37.  Cor pulmonale
A.
B.
C.
38.  Actin and myosin, striated and involuntary are descriptive terms for the
A.
B.
C.
39.  Seventy (70) mL/beat x 72 beats/min is the amount of blood that determines the
A.
B.
C.
40.  Which of the following terms describes myocardial contraction and relaxation?
A.
B.
C.
41.  Which of the following occurs during ventricular systole?
A.
B.
C.
42.  The heart drug digitalis stimulates the parasympathetic nerve that supplies the heart. What cardiac effect is expected?
A.
B.
C.
43.  Which of the following increases stroke volume?
A.
B.
C.
44.  Stretching the heart causes the force of myocardial contraction to increase. This stretch effect is called
A.
B.
C.
45.  A chronic elevation in afterload, as in systemic hypertension, is most likely to cause
A.
B.
C.
46.  If heart rate increases to 170 beats/min
A.
B.
C.
47.  An increase venous return of blood to the heart
A.
B.
C.
48.  Preload is most related to
A.
B.
C.
49.  A drug, such as atropine, that blocks the muscarinic receptors is most likely to
A.
B.
C.
50.  A beta,-adrenergic agonist
A.
B.
C.
51.  Norepinephrine (NE)
A.
B.
C.
52.  Blockade of the effects of acetylcholine ACh on the heart
A.
B.
C.
53.  'What happens when the actin and myosin in the ventricles form cross-bridges
A.
B.
C.
54.  For the ventricles to fill, the
A.
B.
C.
55.  If the QRS complex does not develop, the
A.
B.
C.
56.  Which of the following is most likely to increase the ejection fraction?
A.
B.
C.
57.  Which of the following is an age-related cardiac change
A.
B.
C.
58.  The amount of blood in the ventricle at the end of its resting phase is the
A.
B.
C.
59.  Under what condition is end-diastolic volume (EDV) most likely to increase while ejection fraction decreases?
A.
B.
C.
60.  A change in preload causes a change in myocardial contractile force. This response is known as a
A.
B.
C.
61.  A patient in heart failure is given a drug that is classified as a beta1 adrenergic agonist. The drug
A.
B.
C.
62.  Which of the following statements is correct about cardiac output?
A.
B.
C.
63.  During ventricular diastole
A.
B.
C.
64.  Increased return of blood to the heart stretches the heart muscle, thereby
A.
B.
C.
65.  Ventricular systole refers to
A.
B.
C.
66.  Which of the following is least related to the vagus nerve
A.
B.
C.
67.  Which of the following is least characteristic of sympathetic nerve stimulation
A.
B.
C.
68.  Which of the following is descriptive of stroke volume?
A.
B.
C.
69.  Milliliters per minute describes
A.
B.
C.
70.  Which of the following is least related to a bradycardia
A.
B.
C.
71.  Which of the following is least likely to increase cardiac output?
A.
B.
C.
72.  Which of the following is least related to tachydysrhythmias
A.
B.
C.
73.  Bradycardia is most likely to be caused by
A.
B.
C.
74.  Atropine, a muscarinic blocker
A.
B.
C.
75.  Starling's law relates force of myocardial contraction with
A.
B.
C.
76.  Venodilation
A.
B.
C.
77.  Digoxin is a (+) inotropic agent and therefore
A.
B.
C.
78.  An elevation in pulmonary artery pressure is most likely to cause
A.
B.
C.
79.  Which of the following is most likely to elicit a (+) inotropic effect, a (+) dromotropic effect and a (+) chronotropic effect?
A.
B.
C.
80.  Which of the following is a consequence of backward failure associated with left-sided heart failure?
A.
B.
C.
81.  Which of the following is most likely to cause an elevation of pulmonary capillary hydrostatic pressure?
A.
B.
C.
82.  Which of the following is least likely to be used in the treatment of left ventricular failure and pulmonary edema?
A.
B.
C.
83.  Jugular vein distension is most associated with
A.
B.
C.
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