HESI A2 CARDIOVASCULAR
SYSTEM WITH QUESTIONS AND
100% CORRECT ANSWERS
GRADED A+ (2026)
Both the left and right atria receive blood from: - answer-Veins
The right side of the heart receives: - answer-deoxygenated blood from the systemic
circuit.
The left side of the heart is often called - answer-the systemic pump due to blood flow
to the body.
The visceral pericardium is the same as the: - answer-Epicardium
What vessel carries oxygenated blood? - answer-Pulmonary Vein
What valve prevents the backflow of blood from the right ventricle into the right atrium?
- answer-right atrioventricular valve (tricuspid valve)
Autorhythmicity is the responsibility of - answer-Cardiac pacemaker cells
The right and left atria depolarize and contract following the arrival of the action
potential from the - answer-SA node
High pressured blood in the ventricles force what to open? - answer-Semilunar valves
How much blood is pumped from each ventricle during the ventricular ejection phase? -
answer-70 mL
, Which hormone decreases cardiac output by decreasing blood volume and preload? -
answer-atrial natriuretic peptide
What is the function of the valves in the heart? - answer-prevent backflow of blood
through the heart
What vessel(s) deliver oxygenated blood to the left atrium? - answer-pulmonary veins
During what part of the action potential will calcium ions enter the contractile cell? -
answer-Plateau Phase
The P wave on an electrocardiogram (ECG) represents the depolarization of cells in the:
- answer-Atria
What decreases heart rate? - answer-Acetylcholine
Walls of the heart - answer-Epicardium=Outer Layer
Myocardium=Middle Layer
Endocardium= Inner Layer
Pulmonary Blood Circuit - answer-Right ventricle to Lungs to Left Ventricle
Systemic Blood Circuit - answer-Left Ventricle to Body to Right Atrium
Full Blood Flow - answer-Vena Cava to Right Atrium to Right Ventricle to Pulmonary
Artery to Lungs to Pulmonary Veins to Left Atrium to Left Ventricle to Aorta to Body
Blood Supply to the Heart - answer-Left Coronary Artery supplies blood to left heart wall
SYSTEM WITH QUESTIONS AND
100% CORRECT ANSWERS
GRADED A+ (2026)
Both the left and right atria receive blood from: - answer-Veins
The right side of the heart receives: - answer-deoxygenated blood from the systemic
circuit.
The left side of the heart is often called - answer-the systemic pump due to blood flow
to the body.
The visceral pericardium is the same as the: - answer-Epicardium
What vessel carries oxygenated blood? - answer-Pulmonary Vein
What valve prevents the backflow of blood from the right ventricle into the right atrium?
- answer-right atrioventricular valve (tricuspid valve)
Autorhythmicity is the responsibility of - answer-Cardiac pacemaker cells
The right and left atria depolarize and contract following the arrival of the action
potential from the - answer-SA node
High pressured blood in the ventricles force what to open? - answer-Semilunar valves
How much blood is pumped from each ventricle during the ventricular ejection phase? -
answer-70 mL
, Which hormone decreases cardiac output by decreasing blood volume and preload? -
answer-atrial natriuretic peptide
What is the function of the valves in the heart? - answer-prevent backflow of blood
through the heart
What vessel(s) deliver oxygenated blood to the left atrium? - answer-pulmonary veins
During what part of the action potential will calcium ions enter the contractile cell? -
answer-Plateau Phase
The P wave on an electrocardiogram (ECG) represents the depolarization of cells in the:
- answer-Atria
What decreases heart rate? - answer-Acetylcholine
Walls of the heart - answer-Epicardium=Outer Layer
Myocardium=Middle Layer
Endocardium= Inner Layer
Pulmonary Blood Circuit - answer-Right ventricle to Lungs to Left Ventricle
Systemic Blood Circuit - answer-Left Ventricle to Body to Right Atrium
Full Blood Flow - answer-Vena Cava to Right Atrium to Right Ventricle to Pulmonary
Artery to Lungs to Pulmonary Veins to Left Atrium to Left Ventricle to Aorta to Body
Blood Supply to the Heart - answer-Left Coronary Artery supplies blood to left heart wall
