NR507 MIDTERM REVISION
QUESTION AND ANSWERS 100%
ASSURED GRADED A+ ASSURED !!
How does blood flow through the heart? (correct answer)Deoxygenated
venous blood → Sup. Vena Cava → Right Atrium →Tricuspid (AV)
→Empties into R. Ventricle (& it contracts) → Blood ejected through
Pulmonary Valve → Pulmonary Artery → Lungs to be Oxygenated →
Pulmonary Veins → L. Atrium → Mitral (AV) → L. Ventricle (pumps
with each contraction) → Aortic Valve → Aorta → Body
What is systole? (correct answer)Contraction of the heart which pumps
blood
Diastole (correct answer)Relaxation of the heart
What produces S1 and S2 sound? (correct answer)closing of the heart
valves
What produces S1? (correct answer)The mitral and tricuspid valves
which close in systole
What produces S2 sound? (correct answer)The closing of the aortic and
pulmonic valves in diastole
, What is cardiac output? (correct answer)the volume of blood pumped
out by each ventricle per minute
What is stroke volume? (correct answer)amount of blood pumped out by
each ventricle with contraction
What determines cardiac output? (correct answer)stroke volume and
heart rate
What is preload? (correct answer)the degree of stretch on the heart
before it contracts, related to ventricular filling, end diastolic pressure,
amount of blood entering the ventricle during diastole
What is afterload? (correct answer)resistance left ventricle must
overcome to circulate blood
What is contractility? (correct answer)Normal ability of muscle to
contract at a given force for a given stretch. It is independent of
preload/afterload
Will sustained tachycardia result in increased or decreased stroke
volume? (correct answer)Decreased
What conditions can result in decreased contractility? (correct
answer)Ischemia, acidosis, cardiomyopathy
QUESTION AND ANSWERS 100%
ASSURED GRADED A+ ASSURED !!
How does blood flow through the heart? (correct answer)Deoxygenated
venous blood → Sup. Vena Cava → Right Atrium →Tricuspid (AV)
→Empties into R. Ventricle (& it contracts) → Blood ejected through
Pulmonary Valve → Pulmonary Artery → Lungs to be Oxygenated →
Pulmonary Veins → L. Atrium → Mitral (AV) → L. Ventricle (pumps
with each contraction) → Aortic Valve → Aorta → Body
What is systole? (correct answer)Contraction of the heart which pumps
blood
Diastole (correct answer)Relaxation of the heart
What produces S1 and S2 sound? (correct answer)closing of the heart
valves
What produces S1? (correct answer)The mitral and tricuspid valves
which close in systole
What produces S2 sound? (correct answer)The closing of the aortic and
pulmonic valves in diastole
, What is cardiac output? (correct answer)the volume of blood pumped
out by each ventricle per minute
What is stroke volume? (correct answer)amount of blood pumped out by
each ventricle with contraction
What determines cardiac output? (correct answer)stroke volume and
heart rate
What is preload? (correct answer)the degree of stretch on the heart
before it contracts, related to ventricular filling, end diastolic pressure,
amount of blood entering the ventricle during diastole
What is afterload? (correct answer)resistance left ventricle must
overcome to circulate blood
What is contractility? (correct answer)Normal ability of muscle to
contract at a given force for a given stretch. It is independent of
preload/afterload
Will sustained tachycardia result in increased or decreased stroke
volume? (correct answer)Decreased
What conditions can result in decreased contractility? (correct
answer)Ischemia, acidosis, cardiomyopathy
