EKG certification Certification EKG Cardiac Anatomy & Physiology 2

Question 1

Which heart valve separates the left atrium from the left ventricle?

Accepted Answer

Mitral valve

Answer

Tricuspid valve

Answer

Aortic valve

Answer

Pulmonic valve

Question 2

What is the normal duration of the PR interval on an EKG?

Accepted Answer

0.12 to 0.20 seconds

Answer

0.06 to 0.10 seconds

Answer

0.20 to 0.40 seconds

Answer

0.36 to 0.44 seconds

Question 3

The coronary sinus drains deoxygenated blood from the cardiac veins into which chamber?

Accepted Answer

Right atrium

Answer

Left atrium

Answer

Right ventricle

Answer

Left ventricle

Question 4

Which layer of the heart wall is responsible for the contractile force during each heartbeat?

Accepted Answer

Myocardium

Answer

Endocardium

Answer

Epicardium

Answer

Pericardium

Question 5

During which phase of the cardiac cycle do the ventricles fill with blood passively?

Accepted Answer

Diastole

Answer

Systole

Answer

Isovolumetric contraction

Answer

Ejection phase

Question 6

The right coronary artery primarily supplies blood to which structure critical for the heart's electrical conduction?

Accepted Answer

SA node and AV node

Answer

Bundle of His

Answer

Left bundle branch

Answer

Purkinje fibers