Clinicals Heart Test

The natural pacemaker of the heart is the:

• Atrioventricular node (AV node)

• Sinoatrial node (SA node)

• Bundle of His

• Purkinje fibers

Blood enters the right atrium from the:

• Aorta

• Pulmonary veins

• Superior and inferior vena cava

• Coronary arteries

The left ventricle pumps blood into the:

• Pulmonary artery

• Superior vena cava

• Aorta

• Coronary sinus

What does the P wave represent on an EKG?

• Ventricular systole

• Atrial diastole

• Atrial systole

• Ventricular systole

The QRS complex corresponds to:

• Atrial systole

• Ventricular systole

• Atrial diastole

• Ventricular diastole

What does the T wave represent?

• Atrial systole

• Ventricular systole

• Atrial diastole

• Ventricular diastole

Which interval on the EKG represents the time it takes for electrical impulses to travel from the atria to the ventricles?

• PR interval

• QT interval

• ST segment

• RR interval

The aortic valve prevents backflow of blood into the:

• Left atrium

• Right atrium

• Right ventricle

• Left ventricle

What is the term for an abnormal heart rhythm?

• Bradycardia

• Tachycardia

• Arrhythmia

• Fibrillation

Which chamber of the heart receives oxygen-rich blood from the lungs?

• Right atrium

• Left atrium

• Right ventricle

• Left ventricle