Question 1

Muscular ridges on the inner surface of the ventricles are called

Accepted Answer

A)  coronary sinuses. 
B)  trabeculae carneae. 
C)  intercalated discs. 
D)  papillary muscles. 
E)  chordae tendineae. 
A)  coronary sinuses. 
B)  trabeculae carneae. 
C)  intercalated discs. 
D)  papillary muscles. 
E)  chordae tendineae.

Question 2

Which statement correctly describes the term left atrioventricular valve?

Accepted Answer

A)  Its cusps open into the left atrium. 
B)  Its cusps open into the superior vena cava. 
C)  Its cusps open into the aorta. 
D)  Its cusps open into the left ventricle. 
E)  Its cusps open into the pulmonary trunk. 
A)  Its cusps open into the left atrium. 
B)  Its cusps open into the superior vena cava. 
C)  Its cusps open into the aorta. 
D)  Its cusps open into the left ventricle. 
E)  Its cusps open into the pulmonary trunk.

Question 3

Rupture of the papillary muscles in the left ventricle may result in

Accepted Answer

A)  pulmonary valve regurgitation. 
B)  mitral valve prolapse. 
C)  tricuspid regurgitation. 
D)  tricuspid prolapse. 
E)  aortic valve prolapse. 
A)  pulmonary valve regurgitation. 
B)  mitral valve prolapse. 
C)  tricuspid regurgitation. 
D)  tricuspid prolapse. 
E)  aortic valve prolapse.

Question 4

Compared to the right ventricle, the left ventricle has all the following characteristics except

Accepted Answer

A)  has a thicker wall. 
B)  is round in cross section. 
C)  pumps a greater volume. 
D)  works harder. 
E)  produces about four to six times more pressure when it contracts. 
A)  has a thicker wall. 
B)  is round in cross section. 
C)  pumps a greater volume. 
D)  works harder. 
E)  produces about four to six times more pressure when it contracts.

Question 5

In-Text Figure Based Questions
-What happens to the electrical impulse when it reaches the AV node? (Figure 20-11)

Accepted Answer

A)  It fizzles out. 
B)  It gets delayed. 
C)  It gets stronger. 
D)  It spreads across the purkinje fibers. 
E)  It causes ventricular contraction to occur. 
A)  It fizzles out. 
B)  It gets delayed. 
C)  It gets stronger. 
D)  It spreads across the purkinje fibers. 
E)  It causes ventricular contraction to occur.

Question 6

Calculate the cardiac output of a patient with a heart rate of 100 beats/minute and a stroke volume of75ml.

Accepted Answer

A)  0.75 ml / min 
B)  750 ml / min 
C)  7500 ml / min 
D)  175 ml / min 
E)  25 ml / min 
A)  0.75 ml / min 
B)  750 ml / min 
C)  7500 ml / min 
D)  175 ml / min 
E)  25 ml / min

Question 7

The property of heart muscle to contract in the absence of neural or hormonal stimulation is called

Accepted Answer

A)  intrinsic. 
B)  extrinsic. 
C)  automaticity. 
D)  self-replicating. 
E)  self-starting. 
A)  intrinsic. 
B)  extrinsic. 
C)  automaticity. 
D)  self-replicating. 
E)  self-starting.

Question 8

The endocardium consists of this type of tissue.

Accepted Answer

A)  cardiac muscle 
B)  simple squamous epithelium 
C)  dense irregular connective tissue 
D)  reticular connective tissue 
E)  stratified squamous epithelium 
A)  cardiac muscle 
B)  simple squamous epithelium 
C)  dense irregular connective tissue 
D)  reticular connective tissue 
E)  stratified squamous epithelium

Question 9

The principle that increasing the end-diastolic volume results in a corresponding increase in the stroke volume is known as

Accepted Answer

A)  afterload. 
B)  cardiac capacity. 
C)  cardiac reserve. 
D)  Frank-Starling principle. 
E)  expandibility. 
A)  afterload. 
B)  cardiac capacity. 
C)  cardiac reserve. 
D)  Frank-Starling principle. 
E)  expandibility.

Question 10

Blood is supplied to the myocardium by

Accepted Answer

A)  the coronary sinus. 
B)  contact with blood in the pumping chambers. 
C)  the coronary arteries. 
D)  arteries that branch from the pulmonary arteries. 
E)  arteries that branch off the subclavian arteries. 
A)  the coronary sinus. 
B)  contact with blood in the pumping chambers. 
C)  the coronary arteries. 
D)  arteries that branch from the pulmonary arteries. 
E)  arteries that branch off the subclavian arteries.

Question 11

Which valve(s) contains 2 cusps?

Accepted Answer

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

Question 12

A hole in the interventricular septum in an infant may cause all of the following symptoms except

Accepted Answer

A)  mixing of oxygen-rich and oxygen-poor blood. 
B)  a murmur to be heard. 
C)  the heart to work harder. 
D)  the individual to have low peripheral oxygen saturation. 
E)  build-up of atherosclerotic plaque. 
A)  mixing of oxygen-rich and oxygen-poor blood. 
B)  a murmur to be heard. 
C)  the heart to work harder. 
D)  the individual to have low peripheral oxygen saturation. 
E)  build-up of atherosclerotic plaque.

Question 13

________ is to slow heart rate as ________ is to fast heart rate.

Accepted Answer

A)  Tachycardia; bradycardia 
B)  Bradycardia; cardiomyopathy 
C)  Bradycardia; tachycardia 
D)  Cardiac tamponade; bradycardia 
E)  Angina; infarction 
A)  Tachycardia; bradycardia 
B)  Bradycardia; cardiomyopathy 
C)  Bradycardia; tachycardia 
D)  Cardiac tamponade; bradycardia 
E)  Angina; infarction

Question 14

During the beginning of ventricular systole when the muscle is contracting but not enough pressure hasbuilt up to open the semilunar valves the heart is said to be in

Accepted Answer

A)  atrial kick. 
B)  isovolumetric contraction. 
C)  isovolumetric relaxation. 
D)  atrial systole. 
E)  passive ventricular filling. 
A)  atrial kick. 
B)  isovolumetric contraction. 
C)  isovolumetric relaxation. 
D)  atrial systole. 
E)  passive ventricular filling.

Question 15

Blood returning to the heart from the pulmonary 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 16

When heart rate increases, the time spent in

Accepted Answer

A)  systole increases. 
B)  diastole increases. 
C)  all phases decreases but most of the decrease is during systole. 
D)  all phases decreases but most of the decrease is during diastole. 
E)  isovolumetric contraction increases. 
A)  systole increases. 
B)  diastole increases. 
C)  all phases decreases but most of the decrease is during systole. 
D)  all phases decreases but most of the decrease is during diastole. 
E)  isovolumetric contraction increases.

Question 17

The T wave on an ECG tracing represents

Accepted Answer

A)  atrial depolarization. 
B)  atrial repolarization. 
C)  ventricular depolarization. 
D)  ventricular repolarization. 
E)  ventricular contraction. 
A)  atrial depolarization. 
B)  atrial repolarization. 
C)  ventricular depolarization. 
D)  ventricular repolarization. 
E)  ventricular contraction.

Question 18

Figure 20-2 Cardiac Cycle
  
Use Figure 20-2 to answer the following questions:
-What occurs at the circle labeled "4" on the graph?

Accepted Answer

A)  ventricular ejection 
B)  sympathetic stimulation 
C)  isovolumetric ventricular contraction 
D)  isovolumetric ventricular relaxation 
E)  ventricular filling 
A)  ventricular ejection 
B)  sympathetic stimulation 
C)  isovolumetric ventricular contraction 
D)  isovolumetric ventricular relaxation 
E)  ventricular filling

Question 19

The relaxation phase of the cardiac cycle is called

Accepted Answer

A)  depolarization. 
B)  systole. 
C)  diastole. 
D)  hyperpolarization. 
E)  asystole. 
A)  depolarization. 
B)  systole. 
C)  diastole. 
D)  hyperpolarization. 
E)  asystole.

Question 20

The visceral pericardium is the same as the

Accepted Answer

A)  mediastinum. 
B)  parietal pericardium. 
C)  epicardium. 
D)  myocardium. 
E)  endocardium. 
A)  mediastinum. 
B)  parietal pericardium. 
C)  epicardium. 
D)  myocardium. 
E)  endocardium.

Exam 20: The Heart

Muscular ridges on the inner surface of the ventricles are called

Which statement correctly describes the term left atrioventricular valve?

Rupture of the papillary muscles in the left ventricle may result in

Compared to the right ventricle, the left ventricle has all the following characteristics except

In-Text Figure Based Questions -What happens to the electrical impulse when it reaches the AV node? (Figure 20-11)

Calculate the cardiac output of a patient with a heart rate of 100 beats/minute and a stroke volume of75ml.

The property of heart muscle to contract in the absence of neural or hormonal stimulation is called

The endocardium consists of this type of tissue.

The principle that increasing the end-diastolic volume results in a corresponding increase in the stroke volume is known as

Blood is supplied to the myocardium by

Which valve(s) contains 2 cusps?

A hole in the interventricular septum in an infant may cause all of the following symptoms except

________ is to slow heart rate as ________ is to fast heart rate.

During the beginning of ventricular systole when the muscle is contracting but not enough pressure hasbuilt up to open the semilunar valves the heart is said to be in

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

When heart rate increases, the time spent in

The T wave on an ECG tracing represents

Figure 20-2 Cardiac Cycle Use Figure 20-2 to answer the following questions: -What occurs at the circle labeled "4" on the graph?

The relaxation phase of the cardiac cycle is called

The visceral pericardium is the same as the

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

is to slow heart rate as is to fast heart rate.