NURS 301 EXAM #3 QUESTIONS AND
ANSWERS. VERIFIED 2025/2026.
What is the primary function of the cardiovascular system? - ANS To deliver oxygenated
blood to tissues and return deoxygenated blood to the heart.
What is cardiac output? - ANS The amount of blood ejected from the left heart.
How does blood return to the heart after circulating through the body? - ANS Through the
superior and inferior vena cava.
What are the components of the vascular system? - ANS Arteries, veins, and capillaries.
What type of blood do arteries carry? - ANS Oxygenated blood.
What is the role of veins in the vascular system? - ANS To convey deoxygenated blood back to
the heart.
What is the arterial system characterized by? - ANS High pressure and thick-walled muscular
vessels.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, What is the function of the venous system? - ANS To carry blood from the capillary bed back
to the right heart.
What is the capillary bed responsible for? - ANS Delivering oxygen and nutrients to tissues
and removing cellular waste.
Where is the heart located? - ANS In the thoracic cavity between the lungs, in the
mediastinum.
What protects the heart? - ANS The pericardium.
What are the three layers of the heart muscle wall? - ANS Epicardium, myocardium, and
endocardium.
What are the four chambers of the heart? - ANS Right atrium, right ventricle, left atrium, and
left ventricle.
What is the function of the AV valves? - ANS To allow flow from the atria to the ventricles and
prevent retrograde flow.
What are the two types of semilunar valves? - ANS Pulmonary valve and aortic valve.
What is the role of coronary arteries? - ANS To supply blood to the heart muscle.
What is automaticity in the cardiac conduction system? - ANS The ability of cardiac cells to
generate impulses independently and rhythmically.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
ANSWERS. VERIFIED 2025/2026.
What is the primary function of the cardiovascular system? - ANS To deliver oxygenated
blood to tissues and return deoxygenated blood to the heart.
What is cardiac output? - ANS The amount of blood ejected from the left heart.
How does blood return to the heart after circulating through the body? - ANS Through the
superior and inferior vena cava.
What are the components of the vascular system? - ANS Arteries, veins, and capillaries.
What type of blood do arteries carry? - ANS Oxygenated blood.
What is the role of veins in the vascular system? - ANS To convey deoxygenated blood back to
the heart.
What is the arterial system characterized by? - ANS High pressure and thick-walled muscular
vessels.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, What is the function of the venous system? - ANS To carry blood from the capillary bed back
to the right heart.
What is the capillary bed responsible for? - ANS Delivering oxygen and nutrients to tissues
and removing cellular waste.
Where is the heart located? - ANS In the thoracic cavity between the lungs, in the
mediastinum.
What protects the heart? - ANS The pericardium.
What are the three layers of the heart muscle wall? - ANS Epicardium, myocardium, and
endocardium.
What are the four chambers of the heart? - ANS Right atrium, right ventricle, left atrium, and
left ventricle.
What is the function of the AV valves? - ANS To allow flow from the atria to the ventricles and
prevent retrograde flow.
What are the two types of semilunar valves? - ANS Pulmonary valve and aortic valve.
What is the role of coronary arteries? - ANS To supply blood to the heart muscle.
What is automaticity in the cardiac conduction system? - ANS The ability of cardiac cells to
generate impulses independently and rhythmically.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
