CEN certified emergency nurse EXAM A+ GRADE ASSURED COMPLETE SOLUTIONS AND VERIFIED ANSWERS LATEST UPDATE!!!!

NURS EXAM zm




Exam Solution
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CERTIFIED EMERGENCY NURSE EXAM 2026 A+ GRADE zm zm zm zm zm zm zm




ASSURED COMPLETE SOLUTIONS AND VERIFIED ANSW
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ERS (BFC31) zm




QUESTION 1 zm




Term
ANSWER

Definition



QUESTION 2 zm




Atrioventricular valves zm




ANSWER

Tricuspid and mitral valves located between the atria and ventricle and cause S1 (first) heart sound
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s when the close.
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QUESTION 3 zm




Semilunar valves zm




ANSWER

Aortic and pulmonic valves located between ventricles and great vessels and cause the S2 (second)
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heart sound when they close.
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QUESTION 4 zm




Blood flows through the cardiac valves in this order:
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ANSWER

tricuspid -> pulmonic -> mitral -> aortic
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,QUESTION 5 zm




The cardiac wall has 3 layers:
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ANSWER

epicardium, myocardium, and endocardium
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QUESTION 6 zm




The pericardiuim is
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ANSWER

the sac surrounding the heart
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QUESTION 7 zm




The pericardium is divided into two layers:
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ANSWER

the fibrous pericardium and serous pericardium
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QUESTION 8 zm




Stroke volume is
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ANSWER

the volume of blood pumped from the left ventricle during one contraction
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QUESTION 9 zm




Stroke volume depends on
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ANSWER

Preload, afterload, and contractility
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QUESTION 10 zm




Preload
ANSWER

how much the ventricles stretch at the end of diastole
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, QUESTION 11 zm




Afterload
ANSWER

the amount of resistance needed for the heart to open the aortic valve and force blood volume into
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circulation



QUESTION 12 zm




Contractility
ANSWER

the force of the heart, independent of preload and afterload
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QUESTION 13 zm




Normal stroke volume is ____ mL per contraction
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ANSWER

60-130 mL zm




QUESTION 14 zm




Heart rate zm




ANSWER

how many times the ventricles contract each minute
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QUESTION 15 zm




Cardiac output is zm zm




ANSWER

the volume of blood that the heart pumps every minute
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QUESTION 16 zm




To calculate cardiac output (CO):
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ANSWER

Multiply stroke volume (SV) by heart rate (HR)
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