A&P Quiz 2 (The Heart)

The P wave on an ECG represents:

• Ventricular Repolarization

• Atrial Depolarization

• Ventricular Depolarization

• Atrial Repolarization

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

• Cardiac Cycle

• Systolic Cycle

• Respiratory Cycle

• Diastolic Cycle

The double-walled sac that surrounds the heart is called the:

• Epicardium

• Pericardium

• Endocardium

• Myocardium

Starting when deoxygenated blood is returned to the heart from the body, what is the correct progression of blood through the heart and lungs?

• Right atrium, lungs, left atrium, right ventricle, left ventricle

• Right atrium, right ventricle, lungs, left atrium, left ventricle

  (RA, RV, L, LA, LV)

• Right atrium, left atrium, lungs, right ventricle, left ventricle

• Right ventricle, lungs, left ventricle, right atrium, left atrium

What is the correct progression of the cardiac impulse?

• SA node, AV node, bundle of His, Purkinje fibers

• SA node, bundle of His, AV node, Purkinje fibers

• Atrioventricular (AV) node, sinoatrial (SA) node, Purkinje fibers, bundle of His

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

• Stroke Volume

• Cardiac Output

• Cardiac Cycle

• Ejection Fraction

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

• Another area of the electrical system will initiate a heartbeat.

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

• The patient will go into cardiac arrest.

  
  

Which artery supplies blood to the front and main wall of the left ventricle?

• Right Coronary Artery

• Left Anterior Descending Artery

• Coronary Sinus

• Circumflex Artery

Which system does the cardiac acceleratory center activate in response to emotional stress or increased physical activity?

• Autonomic Nervous Systrem

• Sympathetic nervous system

• Central Nervous System

• Parasympathetic Nervous System

The cardiac muscle that performs the work of the heart is also called the:

• Endocardium

• Myocardium

• Epicardium

• Pericardium