Understanding Medical
Surgical Nursing Chapter 21
Exam Questions and Correct
Solutions
Epicardium - Correct Answers: Inner membrane on the surface of the heart muscle
Myocardium - Correct Answers: Cardiac Muscle
Pericardium - Correct Answers: Outer membrane (sac around the heart)
Serous fluid - Correct Answers: Is between the parietal and visceral layers; prevents friction as the heart
beats
Parietal Membrane - Correct Answers: Middle layer
What lines the myocardium? - Correct Answers: Epicardium which prevents abnormal clotting
Vena Cava - Correct Answers: 1st
Right Atrium - Correct Answers: 2nd
Tricuspid Valve - Correct Answers: 3rd
Right Ventricle - Correct Answers: 4th
Pulmonic Valve - Correct Answers: 5th
, Pulmonary Artery - Correct Answers: 6th
Lungs - Correct Answers: 7th
Pulmonary Veins - Correct Answers: 8th
Left Atrium - Correct Answers: 9th
Mitral Valve - Correct Answers: 10th
Left Ventricle - Correct Answers: 11th
Aortic Valve - Correct Answers: 12th
Aorta - Correct Answers: 13th
Rest of the body - Correct Answers: 14th
What part of the heart pumps with the most force? - Correct Answers: Left ventricle
SA Node (Sinoatrial) - Correct Answers: Pacemaker initiates heartbeat at about 100 beats per minute
and 75 at rest (even lower for athletes)
AV Node - Correct Answers: Backs up the SA node at 40-60 beats per minute
Bundle of His - Correct Answers: Backs up the AV node by stimulating the left ventricle to beat at a rate
of 25-35 beats per minute
During a cardiac cycle how does the atria and ventricle's contract? - Correct Answers: The atria contract
simultaneously and then the ventricles contact simultaneously (about a half a second later)
Surgical Nursing Chapter 21
Exam Questions and Correct
Solutions
Epicardium - Correct Answers: Inner membrane on the surface of the heart muscle
Myocardium - Correct Answers: Cardiac Muscle
Pericardium - Correct Answers: Outer membrane (sac around the heart)
Serous fluid - Correct Answers: Is between the parietal and visceral layers; prevents friction as the heart
beats
Parietal Membrane - Correct Answers: Middle layer
What lines the myocardium? - Correct Answers: Epicardium which prevents abnormal clotting
Vena Cava - Correct Answers: 1st
Right Atrium - Correct Answers: 2nd
Tricuspid Valve - Correct Answers: 3rd
Right Ventricle - Correct Answers: 4th
Pulmonic Valve - Correct Answers: 5th
, Pulmonary Artery - Correct Answers: 6th
Lungs - Correct Answers: 7th
Pulmonary Veins - Correct Answers: 8th
Left Atrium - Correct Answers: 9th
Mitral Valve - Correct Answers: 10th
Left Ventricle - Correct Answers: 11th
Aortic Valve - Correct Answers: 12th
Aorta - Correct Answers: 13th
Rest of the body - Correct Answers: 14th
What part of the heart pumps with the most force? - Correct Answers: Left ventricle
SA Node (Sinoatrial) - Correct Answers: Pacemaker initiates heartbeat at about 100 beats per minute
and 75 at rest (even lower for athletes)
AV Node - Correct Answers: Backs up the SA node at 40-60 beats per minute
Bundle of His - Correct Answers: Backs up the AV node by stimulating the left ventricle to beat at a rate
of 25-35 beats per minute
During a cardiac cycle how does the atria and ventricle's contract? - Correct Answers: The atria contract
simultaneously and then the ventricles contact simultaneously (about a half a second later)
