NUR 257 Test #1 UPDATED ACTUAL
Exam Questions and CORRECT Answers
What are the three layers of the heart and where are they located? - CORRECT
ANSWER - Epicardium=outer protective layer
Myocardium= the muscle tissues of the heart
Endocardium=thin inner layer
What valve is located between the right atrium and right ventricle? - CORRECT
ANSWER - Tricuspid Valve
What valve is between the left atrium and left ventricle? - CORRECT ANSWER - Mitral
Valve
What do the coronary arteries do? - CORRECT ANSWER - supply blood to the heart
What does the cardiac conduction system consist of? - CORRECT ANSWER - SA node,
AV node, bundle of His, bundle branches, and Purkinje fibers
What is hemodynamics? - CORRECT ANSWER - the balance of your body
Blood flow through the heart - CORRECT ANSWER - 1-Superior & Inferior Vena Cava,
2-Rt Atrium, 3-Tricuspid Valve, 4- Rt Ventricle, 5-Pulmonary Valve, 6-Pulmonary Artery, 7-
Lungs-pick up oxygen, 8-Pulmonary Veins, 9- Lt Atrium, 10- Mitral Valve (Bicuspid), 11-Lt
Ventricle, 12- Aortic Valve, 13-Aorta, 14- Body
What is the pacemaker of the heart? - CORRECT ANSWER - SA node
Electrical activation of cells "Excitement"
, (caused by influx of sodium into cell while potassium exits cell) - CORRECT ANSWER -
Depolarization
Return of Cells to resting state "Relaxation"
(caused by reentry of potassium into cell while sodium exits) - CORRECT ANSWER -
Repolarization
The time in between excitement and relaxation where they need to fill back up to get energy to
go again
(sandwich and a nap) - CORRECT ANSWER - Refractory Period
The number of cardiac cycles is equal to? - CORRECT ANSWER - Heart Beat
Each cardiac cycle has three major sequential events........ - CORRECT ANSWER -
Diastole
-when the heart fills with blood
Atrial systole
-atrial contracts and moves blood to ventricle
Ventricular systole
-ventricle ejects blood out of heart
Cardiac Output (CO) - CORRECT ANSWER - measurement of the amount of blood
ejected per minute from the heart
What is ejection fraction? - CORRECT ANSWER - how much blood is ejected with each
beat
What is stroke volume? - CORRECT ANSWER - the amount of blood ejected by the
heart
Exam Questions and CORRECT Answers
What are the three layers of the heart and where are they located? - CORRECT
ANSWER - Epicardium=outer protective layer
Myocardium= the muscle tissues of the heart
Endocardium=thin inner layer
What valve is located between the right atrium and right ventricle? - CORRECT
ANSWER - Tricuspid Valve
What valve is between the left atrium and left ventricle? - CORRECT ANSWER - Mitral
Valve
What do the coronary arteries do? - CORRECT ANSWER - supply blood to the heart
What does the cardiac conduction system consist of? - CORRECT ANSWER - SA node,
AV node, bundle of His, bundle branches, and Purkinje fibers
What is hemodynamics? - CORRECT ANSWER - the balance of your body
Blood flow through the heart - CORRECT ANSWER - 1-Superior & Inferior Vena Cava,
2-Rt Atrium, 3-Tricuspid Valve, 4- Rt Ventricle, 5-Pulmonary Valve, 6-Pulmonary Artery, 7-
Lungs-pick up oxygen, 8-Pulmonary Veins, 9- Lt Atrium, 10- Mitral Valve (Bicuspid), 11-Lt
Ventricle, 12- Aortic Valve, 13-Aorta, 14- Body
What is the pacemaker of the heart? - CORRECT ANSWER - SA node
Electrical activation of cells "Excitement"
, (caused by influx of sodium into cell while potassium exits cell) - CORRECT ANSWER -
Depolarization
Return of Cells to resting state "Relaxation"
(caused by reentry of potassium into cell while sodium exits) - CORRECT ANSWER -
Repolarization
The time in between excitement and relaxation where they need to fill back up to get energy to
go again
(sandwich and a nap) - CORRECT ANSWER - Refractory Period
The number of cardiac cycles is equal to? - CORRECT ANSWER - Heart Beat
Each cardiac cycle has three major sequential events........ - CORRECT ANSWER -
Diastole
-when the heart fills with blood
Atrial systole
-atrial contracts and moves blood to ventricle
Ventricular systole
-ventricle ejects blood out of heart
Cardiac Output (CO) - CORRECT ANSWER - measurement of the amount of blood
ejected per minute from the heart
What is ejection fraction? - CORRECT ANSWER - how much blood is ejected with each
beat
What is stroke volume? - CORRECT ANSWER - the amount of blood ejected by the
heart
