Question 1

Considering the left ventricle, why does isovolumetric ventricular contraction occur during ventricularsystole?

Accepted Answer

A)  The ventricle needs to pressurize the blood to close the aortic valve. 
B)  Ventricular pressure is greater than atrial pressure so the ventricle cannot eject blood. 
C)  The bicuspid valve needs time to shut before the ventricle can eject blood. 
D)  Aortic pressure is higher than ventricular pressure and the ventricle must pressurize the blood to open the aortic valve. 
E)  The ventricle is still filling with blood and therefore cannot eject blood during this time. 
A)  The ventricle needs to pressurize the blood to close the aortic valve. 
B)  Ventricular pressure is greater than atrial pressure so the ventricle cannot eject blood. 
C)  The bicuspid valve needs time to shut before the ventricle can eject blood. 
D)  Aortic pressure is higher than ventricular pressure and the ventricle must pressurize the blood to open the aortic valve. 
E)  The ventricle is still filling with blood and therefore cannot eject blood during this time.

Question 2

During ventricular systole, the

Accepted Answer

A)  atria are contracting. 
B)  blood is entering the ventricles. 
C)  AV valves are closed. 
D)  pressure in the ventricles remains constant. 
E)  pressure in the aorta remains constant. 
A)  atria are contracting. 
B)  blood is entering the ventricles. 
C)  AV valves are closed. 
D)  pressure in the ventricles remains constant. 
E)  pressure in the aorta remains constant.

Question 3

Which valve(s) cusps open up toward the base of the heart?

Accepted Answer

A)  right and left AV valves 
B)  aortic and pulmonary valves 
C)  left AV and aortic valves 
D)  right AV and pulmonary valves 
E)  right AV, left AV, aortic and pulmonary valves 
A)  right and left AV valves 
B)  aortic and pulmonary valves 
C)  left AV and aortic valves 
D)  right AV and pulmonary valves 
E)  right AV, left AV, aortic and pulmonary valves

Question 4

Each of the following factors will increase cardiac output except increased

Accepted Answer

A)  venous return. 
B)  parasympathetic stimulation. 
C)  sympathetic stimulation. 
D)  heart rate. 
E)  force of contraction. 
A)  venous return. 
B)  parasympathetic stimulation. 
C)  sympathetic stimulation. 
D)  heart rate. 
E)  force of contraction.

Question 5

The ________ lines the chambers of the heart, covers the heart valves, and is continuous with the endothelium.

Accepted Answer

A)  epicardium 
B)  myocardium 
C)  endocardium 
D)  visceral pericardium 
E)  mediastinum 
A)  epicardium 
B)  myocardium 
C)  endocardium 
D)  visceral pericardium 
E)  mediastinum

Question 6

If a patient's resting cardiac output is 5.6 l/min and on a stress test she elevated her heart rate to amaximum of 176 beats/min with a stroke volume of 115 ml/beat, what is her cardiac reserve? Show your work.

Accepted Answer

Cardiac reserve equals maximum

Question 7

The heart beats approximately ________ times each day.

Accepted Answer

A)  1,000 
B)  10,000 
C)  100,000 
D)  1,000,000 
E)  10,000,000 
A)  1,000 
B)  10,000 
C)  100,000 
D)  1,000,000 
E)  10,000,000

Question 8

The backward flow of blood from a ventricle to its atrium or from a outflow vessel to its ventricle iscalled

Accepted Answer

A)  emesis. 
B)  flutter. 
C)  fibrillation. 
D)  regurgitation. 
E)  stenosis. 
A)  emesis. 
B)  flutter. 
C)  fibrillation. 
D)  regurgitation. 
E)  stenosis.

Question 9

The amount of blood returning to the heart is the

Accepted Answer

A)  afterload. 
B)  stroke volume. 
C)  end-diastolic volume. 
D)  cardiac reserve. 
E)  venous return. 
A)  afterload. 
B)  stroke volume. 
C)  end-diastolic volume. 
D)  cardiac reserve. 
E)  venous return.

Question 10

The amount of blood remaining in the ventricle when the semilunar valve closes is the

Accepted Answer

A)  ejection fraction. 
B)  end-diastole volume. 
C)  start-diastolic volume. 
D)  end-systolic volume. 
E)  stroke volume. 
A)  ejection fraction. 
B)  end-diastole volume. 
C)  start-diastolic volume. 
D)  end-systolic volume. 
E)  stroke volume.

Question 11

The right pulmonary veins carry ________ blood to the ________.

Accepted Answer

A)  deoxygenated; left atrium 
B)  oxygenated; right lung 
C)  deoxygenated; superior vena cava 
D)  deoxygenated; right atrium 
E)  oxygenated; left atrium 
A)  deoxygenated; left atrium 
B)  oxygenated; right lung 
C)  deoxygenated; superior vena cava 
D)  deoxygenated; right atrium 
E)  oxygenated; left atrium

Question 12

The ________ carry blood toward the heart.

Accepted Answer

A)  arterioles 
B)  arteries 
C)  veins 
D)  lacteals 
E)  capillaries 
A)  arterioles 
B)  arteries 
C)  veins 
D)  lacteals 
E)  capillaries

Question 13

Figure 20-1 The Heart
  
Use Figure 20-1 to answer the following questions:
-Identify the structure(s) labeled "8."

Accepted Answer

A)  moderator band 
B)  pectinate muscles 
C)  papillary muscles 
D)  trabeculae carneae 
E)  chordae tendineae 
A)  moderator band 
B)  pectinate muscles 
C)  papillary muscles 
D)  trabeculae carneae 
E)  chordae tendineae

Question 14

The right ventricle pumps blood to the

Accepted Answer

A)  right and left lungs. 
B)  left ventricle. 
C)  left atrium. 
D)  aorta. 
E)  right atrium. 
A)  right and left lungs. 
B)  left ventricle. 
C)  left atrium. 
D)  aorta. 
E)  right atrium.

Question 15

________ is when the heart can't maintain adequate cardiac output.

Accepted Answer

A)  Heart failure 
B)  Fibrillation 
C)  Flutter 
D)  Murmur 
E)  Coronary heart disease 
A)  Heart failure 
B)  Fibrillation 
C)  Flutter 
D)  Murmur 
E)  Coronary heart disease

Question 16

Depolarization of the ventricles is represented on an electrocardiogram by the

Accepted Answer

A)  P wave. 
B)  T wave. 
C)  S wave. 
D)  QRS complex. 
E)  PR complex. 
A)  P wave. 
B)  T wave. 
C)  S wave. 
D)  QRS complex. 
E)  PR complex.

Question 17

Blood returning to the heart from the systemic circuit first enters the

Accepted Answer

A)  right atrium. 
B)  right ventricle. 
C)  left atrium. 
D)  left ventricle. 
E)  conus arteriosus. 
A)  right atrium. 
B)  right ventricle. 
C)  left atrium. 
D)  left ventricle. 
E)  conus arteriosus.

Question 18

In a procedure known as ________, an inflatable balloon at the end of a catheter is used to press plaqueback against the vessel wall.

Accepted Answer

A)  balloon angioplasty 
B)  coronary arterial bypass graft 
C)  intravenous catheterization 
D)  ablation 
E)  atherectomy 
A)  balloon angioplasty 
B)  coronary arterial bypass graft 
C)  intravenous catheterization 
D)  ablation 
E)  atherectomy

Exam 20: The Heart

Considering the left ventricle, why does isovolumetric ventricular contraction occur during ventricularsystole?

During ventricular systole, the

Which valve(s) cusps open up toward the base of the heart?

Each of the following factors will increase cardiac output except increased

The ________ lines the chambers of the heart, covers the heart valves, and is continuous with the endothelium.

If a patient's resting cardiac output is 5.6 l/min and on a stress test she elevated her heart rate to amaximum of 176 beats/min with a stroke volume of 115 ml/beat, what is her cardiac reserve? Show your work.

The heart beats approximately ________ times each day.

The backward flow of blood from a ventricle to its atrium or from a outflow vessel to its ventricle iscalled

The amount of blood returning to the heart is the

The amount of blood remaining in the ventricle when the semilunar valve closes is the

The right pulmonary veins carry ________ blood to the ________.

The ________ carry blood toward the heart.

Figure 20-1 The Heart Use Figure 20-1 to answer the following questions: -Identify the structure(s) labeled "8."

The right ventricle pumps blood to the

________ is when the heart can't maintain adequate cardiac output.

Depolarization of the ventricles is represented on an electrocardiogram by the

Blood returning to the heart from the systemic circuit first enters the

In a procedure known as ________, an inflatable balloon at the end of a catheter is used to press plaqueback against the vessel wall.

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Bones and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System

Nervous Tissue

The Spinal Cord, Spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Sensory Pathways and the Somatic Nervous System

The Autonomic Nervous System and Higher-Order Functions

The Special Senses

The Endocrine System

Blood

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism, Nutrition, and Energetics

The Urinary System

Fluid, Electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

Filters

The right pulmonary veins carry blood to the .