A and P 2 CHAPTER 15

The series of events that occur from the beginning of one heartbeat to the beginning of the next is the:

• cardiac cycle

• atrio ventricular cycle

• diastolic cycle

• systolic cycle

The P wave on an ECG represents

• ventricular systole

• ventricular depolarization

• atrial repolarization

• atrial depolarization

The chamber of the heart that pumps oxygenated blood to the body and all of its tissues is the:

• r atrium

• l atrium

• l ventricle

• r ventricle

This valve is located between the right ventricle and the pulmonary artery:

• tricuspid valve

• mitral (biscuspid) valve

• aortic valve

• pulmonary valve

This valve is located between the right atrium and the right ventricle:

• Aortic Valve

• Pulmonary Valve

• Mitral (Bicuspid) Valve

• Tricuspid Valve

Based on your knowledge of the heart’s electrical system, what will happen if a patient’s primary pacemaker fails?

• 
  

  The patient will go into cardiac arrest.

• 
  

  Ventricular fibrillation will occur.

• The atria will stop contracting, but the ventricles will continue to contract.

• 
  

  Another area of the electrical system will initiate a heartbeat.

The chamber of the heart that receives deoxygenated blood from the body is the:

• l ventricle

• r atrium

• left atrium

• r ventricle

This term refers to the amount of blood that the heart pumps in one minute.

• cardiac cycle

• cardiac output

• ejection fraction

• stroke volume

This valve is located between the left atrium and the left ventricle:

• pulmonary valve

• mitral(bicuspid) valve

• aortic valve

• tricuspid valve

Based on your understanding of how the heart works, which of the heart’s chambers would you expect to have the thickest (strongest) walls?

• r atrium

• r ventricle

• l ventricle

• l atrium