Question 1

Using the following answer code, indicate which pressure relationship exists during the time in question.
-when ventricular ejection is occurring

Accepted Answer

A) aortic pressure > ventricular pressure > atrial pressure 
B) ventricular pressure > aortic pressure > atrial pressure 
C) aortic pressure > atrial pressure > ventricular pressure 
D) ventricular pressure > atrial pressure > aortic pressure 
E) atrial pressure > ventricular pressure > aortic pressure 
A) aortic pressure > ventricular pressure > atrial pressure 
B) ventricular pressure > aortic pressure > atrial pressure 
C) aortic pressure > atrial pressure > ventricular pressure 
D) ventricular pressure > atrial pressure > aortic pressure 
E) atrial pressure > ventricular pressure > aortic pressure

Question 2

Indicate the effects of sympathetic and parasympathetic stimulation on the heart using the following answer code:
-stimulation of the vagus nerve

Accepted Answer

A) an effect caused by sympathetic stimulation 
B) an effect caused by parasympathetic stimulation 
C) not brought about by either sympathetic or parasympathetic stimulation 
A) an effect caused by sympathetic stimulation 
B) an effect caused by parasympathetic stimulation 
C) not brought about by either sympathetic or parasympathetic stimulation

Question 3

The function of the chordae tendineae and papillary muscles is to hold the AV valves wide open during diastole to ensure complete ventricular filling.

Accepted Answer

A) True 
 B)False

Question 4

____________________ is the term that refers to the heart's ability to contract rhythmically as a result of action potentials that it generates by itself

Accepted Answer

The answer of ____________________ is the term that refers to...

Question 5

Use the answer code below to complete the following statements.
-The maximum volume of blood that the ventricle contains after filling is complete is the _____.

Accepted Answer

A) stroke volume 
B) end-diastolic volume 
C) cardiac output 
D) heart rate 
E) end-systolic volume
F)sympathetic activity 
A) stroke volume 
B) end-diastolic volume 
C) cardiac output 
D) heart rate 
E) end-systolic volume
F)sympathetic activity

Question 6

Parasympathetic innervation to the heart

Accepted Answer

A)  is the vagus nerve. 
B)  decreases the rate at which spontaneous action potentials are initiated in the SA node. 
C)  decreases the strength of ventricular contraction. 
D)  both (a) and (b) above. 
E)  all of these answers. 
A)  is the vagus nerve. 
B)  decreases the rate at which spontaneous action potentials are initiated in the SA node. 
C)  decreases the strength of ventricular contraction. 
D)  both (a) and (b) above. 
E)  all of these answers.

Question 7

MATCHING
Match term with correct characteristic.
-Associated with semilunar valves.

Accepted Answer

A) gap junction 
B) funny channels 
C) functional syncytium 
D) EDV 
E) papillary muscles
F)second heart sound 
A) gap junction 
B) funny channels 
C) functional syncytium 
D) EDV 
E) papillary muscles
F)second heart sound

Question 8

The volume of blood ejected from each ventricle during a contraction is called the

Accepted Answer

A)  end-diastolic volume. 
B)  end-systolic volume. 
C)  stroke volume. 
D)  cardiac output. 
E)  cardiac reserve. 
A)  end-diastolic volume. 
B)  end-systolic volume. 
C)  stroke volume. 
D)  cardiac output. 
E)  cardiac reserve.

Question 9

An increase in the length of the cardiac muscle fibers prior to contraction ____________________ the stroke volume.

Accepted Answer

The answer of An increase in the length of the...

Question 10

Match EKG feature with correct characteristic.
-Atrial depolarization.

Accepted Answer

A) P wave 
B) QRS complex 
C) T wave 
D) PR interval 
E) TP interval
F)ST segment 
A) P wave 
B) QRS complex 
C) T wave 
D) PR interval 
E) TP interval
F)ST segment

Question 11

Match heart characteristic with correct anatomical structure. Choices may be used more than once or not at all.
-during systole it is forced closed by papillary muscle action

Accepted Answer

A) tricuspid valve 
B) myocardium 
C) aortic semilunar valve 
D) AV node 
E) sinoatrial node 
A) tricuspid valve 
B) myocardium 
C) aortic semilunar valve 
D) AV node 
E) sinoatrial node

Question 12

Which of the following ECG waves represents atrial repolarization?

Accepted Answer

A)  P wave. 
B)  QRS complex. 
C)  T wave. 
D)  atria don't repolarize 
E)  the wave does not appear on an ECG because it occurs at the same time as the QRS complex 
A)  P wave. 
B)  QRS complex. 
C)  T wave. 
D)  atria don't repolarize 
E)  the wave does not appear on an ECG because it occurs at the same time as the QRS complex

Question 13

Use the following answer code to compare the magnitude of the items in question.
-A. rate of depolarization of the SA node on parasympathetic stimulation
B. rate of depolarization of the SA node on sympathetic stimulation

Accepted Answer

A) A is greater than B 
B) B is greater than A 
C) A and B are equal 
A) A is greater than B 
B) B is greater than A 
C) A and B are equal

Question 14

Under resting conditions:

Accepted Answer

A)  heart rate is dominated by sympathetic activity 
B)  heart rate is dominated by parasympathetic activity 
C)  acetylcholine suppresses NE release 
D)  both (a) and (c) 
E)  both (b) and (c) 
A)  heart rate is dominated by sympathetic activity 
B)  heart rate is dominated by parasympathetic activity 
C)  acetylcholine suppresses NE release 
D)  both (a) and (c) 
E)  both (b) and (c)

Question 15

MATCHING: ART
   
The following questions refer to the accompanying diagram of the heart. Eight structures (vessels or chambers) labels have been removed and replaced with letters A-H. Match the letter with list of missing terms below to complete the diagram.
-superior vena cava

Accepted Answer

The answer of MATCHING: ART
   
The following questions...

Question 16

Cardiac muscle cells contain an abundance of __________ which is indicative of how much work the heart does.

Accepted Answer

The answer of Cardiac muscle cells contain an abundance of...

Question 17

The right ventricle pumps out blood low in oxygen content, whereas the left ventricle pumps out blood high in oxygen content.

Accepted Answer

A) True 
 B)False

Question 18

The fastest rate of autorhythmicity is normally carried out by the

Accepted Answer

A)  AV bundle. 
B)  AV node. 
C)  bundle of His. 
D)  Purkinje fibers. 
E)  SA node. 
A)  AV bundle. 
B)  AV node. 
C)  bundle of His. 
D)  Purkinje fibers. 
E)  SA node.

Question 19

The membrane potential of cardiac muscle cells at rest is about ____ mV.

Accepted Answer

A)  -110 
B)  -90 
C)  -70 
D)  -50 
E)  -30 
A)  -110 
B)  -90 
C)  -70 
D)  -50 
E)  -30

Question 20

Use the following answer code to compare the magnitude of the items in question.
-A. resistance and pressure in the pulmonary circulation
B. resistance and pressure in the systemic circulation

Accepted Answer

A) A is greater than B 
B) B is greater than A 
C) A and B are equal 
A) A is greater than B 
B) B is greater than A 
C) A and B are equal

Using the following answer code, indicate which pressure relationship exists during the time in question. -when ventricular ejection is occurring

Indicate the effects of sympathetic and parasympathetic stimulation on the heart using the following answer code: -stimulation of the vagus nerve

The function of the chordae tendineae and papillary muscles is to hold the AV valves wide open during diastole to ensure complete ventricular filling.

____________________ is the term that refers to the heart's ability to contract rhythmically as a result of action potentials that it generates by itself

Use the answer code below to complete the following statements. -The maximum volume of blood that the ventricle contains after filling is complete is the _____.

Parasympathetic innervation to the heart

MATCHING Match term with correct characteristic. -Associated with semilunar valves.

The volume of blood ejected from each ventricle during a contraction is called the

An increase in the length of the cardiac muscle fibers prior to contraction ____________________ the stroke volume.

Match EKG feature with correct characteristic. -Atrial depolarization.

Match heart characteristic with correct anatomical structure. Choices may be used more than once or not at all. -during systole it is forced closed by papillary muscle action

Which of the following ECG waves represents atrial repolarization?

Use the following answer code to compare the magnitude of the items in question. -A. rate of depolarization of the SA node on parasympathetic stimulation B. rate of depolarization of the SA node on sympathetic stimulation

Under resting conditions:

MATCHING: ART The following questions refer to the accompanying diagram of the heart. Eight structures (vessels or chambers) labels have been removed and replaced with letters A-H. Match the letter with list of missing terms below to complete the diagram. -superior vena cava

Cardiac muscle cells contain an abundance of __________ which is indicative of how much work the heart does.

The right ventricle pumps out blood low in oxygen content, whereas the left ventricle pumps out blood high in oxygen content.

The fastest rate of autorhythmicity is normally carried out by the

The membrane potential of cardiac muscle cells at rest is about ____ mV.

Use the following answer code to compare the magnitude of the items in question. -A. resistance and pressure in the pulmonary circulation B. resistance and pressure in the systemic circulation

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division and Special Senses

The Peripheral Nervous System: Efferent Division

Muscle Physiology

The Blood Vessels and Blood Pressure

The Blood and Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine System

The Reproductive System

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Exam 9: Cardiac Physiology

Using the following answer code, indicate which pressure relationship exists during the time in question. -when ventricular ejection is occurring

Indicate the effects of sympathetic and parasympathetic stimulation on the heart using the following answer code: -stimulation of the vagus nerve

The function of the chordae tendineae and papillary muscles is to hold the AV valves wide open during diastole to ensure complete ventricular filling.

____________________ is the term that refers to the heart's ability to contract rhythmically as a result of action potentials that it generates by itself

Use the answer code below to complete the following statements. -The maximum volume of blood that the ventricle contains after filling is complete is the _____.

Parasympathetic innervation to the heart

MATCHING Match term with correct characteristic. -Associated with semilunar valves.

The volume of blood ejected from each ventricle during a contraction is called the

An increase in the length of the cardiac muscle fibers prior to contraction ____________________ the stroke volume.

Match EKG feature with correct characteristic. -Atrial depolarization.

Match heart characteristic with correct anatomical structure. Choices may be used more than once or not at all. -during systole it is forced closed by papillary muscle action

Which of the following ECG waves represents atrial repolarization?

Use the following answer code to compare the magnitude of the items in question. -A. rate of depolarization of the SA node on parasympathetic stimulation B. rate of depolarization of the SA node on sympathetic stimulation

Under resting conditions:

MATCHING: ART The following questions refer to the accompanying diagram of the heart. Eight structures (vessels or chambers) labels have been removed and replaced with letters A-H. Match the letter with list of missing terms below to complete the diagram. -superior vena cava

Cardiac muscle cells contain an abundance of __________ which is indicative of how much work the heart does.

The right ventricle pumps out blood low in oxygen content, whereas the left ventricle pumps out blood high in oxygen content.

The fastest rate of autorhythmicity is normally carried out by the

The membrane potential of cardiac muscle cells at rest is about ____ mV.

Use the following answer code to compare the magnitude of the items in question. -A. resistance and pressure in the pulmonary circulation B. resistance and pressure in the systemic circulation

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division and Special Senses

The Peripheral Nervous System: Efferent Division

Muscle Physiology

The Blood Vessels and Blood Pressure

The Blood and Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine System

The Reproductive System

Filters