Cardiovascular System Practice Exam Questions & Answers Grade A+

Cardiovascular System Practice Exam
Questions9

The muscles that contract to tension the chordae tendinae are called

a. Atrioventricular node

b. Atrial myocardium

c. Papillary muscles

d. Pectinate musclesANSWERSC.



Blood flowing through the heart travels from the right atrium to the right ventricle then up
through the semilunar valve into the ___________ on its way to the lungs

a. Aorta

b. Inferior vena cava

c. Pulmonary arteries

d. Pulmonary veins

e. Superior vena cavaANSWERSC.



Blood returning to the heart from the systemic circulation first enters the

a. Aorta

b. Left atrium

c. Left ventricle

d. Right atrium

e. Right ventricleANSWERSD.



The differences in structure of the left ventricle compared to the right ventricle include

, a. Contains less muscle mass

b. Develops less pressure

c. Muscle encircles the ventricle

d. Relatively thin walls

e. Smaller in sizeANSWERSC.



Which of the following components of the conducting system of the heart occurs earliest in
normal conduction pathway?

a. AV node

b. Bundle branches

c. Bundle of HIS

d. Moderator band

e. Purkinje fibersANSWERSA.



The following are events during a single cardiac cycle

(i) Atria contract

(ii) AV valves close

(iii) AV valves open

(iv) Semilunar valves close

(v) Semilunar valves open

(vi) Ventricles contract

The sequence in which these events would occur during a cardiac cycle is

a. i, vi, ii, v, iv, iii

b. i, iii, vi, ii, v, iv

c. ii, i, iii, vi, iv, v

d. v, iv, i, ii, iii, vi