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Anatomy and Physiology of the Heart – Quiz

Anatomy and Physiology of the Heart – Quiz

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Question 1 of 10

1. Question
1. The characteristic of conductivity is the ability to _____ and is affected in individuals with atrioventricular blocks.
contract in the absence of stimuli
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transmit nerve impulses
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contract in a rhythmic manner
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shorten
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Question 2 of 10

2. Question

2. Normal contracting (systolic) pressure in the right ventricle is ____ and can be assessed via pulmonary arterial line.

0-8 mm Hg
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15-25 mm Hg
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4-12 mm Hg
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80-120mm Hg
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Question 3 of 10

3. Question

3. The intrinsic rate of the Purkinje fibers is _____ and can be seen during idioventricular rhythms on ECG.

60-100 beats per minute
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40-60 beats per minute
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20-40 beats per minute
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100-120 beats per minute
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Question 4 of 10

4. Question

4. Which of the following is true regarding the parasympathetic control of the heart?

The nerve fibers exit the spinal column at C2-T4
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The neurohormone is acetylcholine
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It increases HR and BP
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It assists in increasing blood flow to the muscles of the legs
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Question 5 of 10

5. Question

5. A S2 heart sound is _____ and is heard when the _____.

Abnormal; aortic and pulmonic valves open
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Normal; aortic and pulmonic valves close
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Normal; tricuspid and mitral valves open
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Normal; tricuspid and mitral valves close
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Question 6 of 10

6. Question

6. Isovolumic contraction refers to

The period immediately after the AV valve closes
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A rapid increase in ventricular pressure
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The period when intraventricular volume remains unchanged
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Both B and C are correct
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Question 7 of 10

7. Question

7. Cardiac output indicates the amount of blood ejected out of the left ventricle and is determined by _____.

Venous return
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Stroke volume
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Preload, contractility, and afterload
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Total blood volume
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Question 8 of 10

8. Question

8. Heart failure with reduced ejection fraction indicates

A heart that can’t stretch
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Diastolic dysfunction
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60-70% of the end diastolic blood volume is leaving the ventricle during contraction
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Poor heart function
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Question 9 of 10

9. Question

9. Which of the following does NOT affect venous return?

Musculoskeletal pump
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Thoracic pressure
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Positioning
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Left sided heart failure
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Question 10 of 10

10. Question

10. Blood flows to the muscles during exercise via shunting. This is regulated by the autonomic nervous system and includes _____.

Peripheral vasodilation and coronary vasoconstriction
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Peripheral vasoconstriction and coronary vasodilation
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Norepinephrine stimulation of the beta receptors in the blood vessels of the skeletal muscles
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Epinephrine stimulation of the alpha receptors in the blood vessels of the organs
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