Question 1

Use the following answer code to compare the magnitude of the items in question.
-A. Stroke volume of right ventricle
B. Stroke volume of left ventricle

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 2

MATCHING
Match term with correct characteristic.
-Volume of blood in the ventricle before it contracts

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 3

The rate of appearance of the QRS and T waves is unaffected if the heart develops a complete heart block.

Accepted Answer

A) True 
 B)False

Question 4

Using the following answer code, indicate which pressure relationship exists during the time in question.
-when the aortic valve closes

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 5

The tricuspid prevents regurgitation of blood from the right ventricle back into the right atrium.

Accepted Answer

A) True 
 B)False

Question 6

The plateau phase of the action potential in a contractile cardiac muscle cell occurs as a result of activation of slow Ca²? channels.

Accepted Answer

A) True 
 B)False

Question 7

The average resting heart rate is normally established by the rhythm of the AV node.

Accepted Answer

A) True 
 B)False

Question 8

Indicate the effects of sympathetic and parasympathetic stimulation on the heart using the following answer code:
-decreases the contractility of the atrial muscle

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 9

Which number on the diagram represents the ECG wave immediately after the SA node fires?

Accepted Answer

A)  3 
B)  8 
C)  16 
D)  none of the above 
A)  3 
B)  8 
C)  16 
D)  none of the above

Question 10

An increase in cardiac sympathetic activity ____________________ the rate of depolarization of the SA node.

Accepted Answer

The answer of An increase in cardiac sympathetic activity ____________________...

Question 11

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.
-left ventricle

Accepted Answer

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

Question 12

An increase in parasympathetic activity ____________________ the stroke volume.

Accepted Answer

The answer of An increase in parasympathetic activity ____________________ the...

Question 13

If the cardiac output is 4,800 ml/min and the heart rate is 60 beats per minute, the stroke volume averages ____ ml.

Accepted Answer

A)  60 
B)  70 
C)  80 
D)  120 
E)  140 
A)  60 
B)  70 
C)  80 
D)  120 
E)  140

Question 14

Cardiac output is (ESV-EDV) x heart rate.

Accepted Answer

A) True 
 B)False

Question 15

Use the following answer code to compare the magnitude of the items in question.
-A. Duration of the refractory period in cardiac muscle
B. Duration of the refractory period in skeletal muscle

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 16

All of the blood within the ventricles is ejected during ventricular systole.

Accepted Answer

A) True 
 B)False

Question 17

Match EKG feature with correct characteristic.
-Time during which ventricles are contracting and emptying.

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 18

Indicate which ion is involved in each event being described by using the following answer code.
-Changes in cytosolic _____ concentration bring about changes in the strength of cardiac contraction.

Accepted Answer

A) K+ 
B) Na+ 
C) Ca2+ 
A) K+ 
B) Na+ 
C) Ca2+

Question 19

An increase in heart rate ____________________ the cardiac output.

Accepted Answer

The answer of An increase in heart rate ____________________ the...

Question 20

Use the answer code below to complete the following statements.
-Stroke volume can be increased by increasing _____ and _____.

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

Use the following answer code to compare the magnitude of the items in question. -A. Stroke volume of right ventricle B. Stroke volume of left ventricle

MATCHING Match term with correct characteristic. -Volume of blood in the ventricle before it contracts

The rate of appearance of the QRS and T waves is unaffected if the heart develops a complete heart block.

Using the following answer code, indicate which pressure relationship exists during the time in question. -when the aortic valve closes

The tricuspid prevents regurgitation of blood from the right ventricle back into the right atrium.

The plateau phase of the action potential in a contractile cardiac muscle cell occurs as a result of activation of slow Ca²? channels.

The average resting heart rate is normally established by the rhythm of the AV node.

Indicate the effects of sympathetic and parasympathetic stimulation on the heart using the following answer code: -decreases the contractility of the atrial muscle

Which number on the diagram represents the ECG wave immediately after the SA node fires?

An increase in cardiac sympathetic activity ____________________ the rate of depolarization of the SA node.

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. -left ventricle

An increase in parasympathetic activity ____________________ the stroke volume.

If the cardiac output is 4,800 ml/min and the heart rate is 60 beats per minute, the stroke volume averages ____ ml.

Cardiac output is (ESV-EDV) x heart rate.

Use the following answer code to compare the magnitude of the items in question. -A. Duration of the refractory period in cardiac muscle B. Duration of the refractory period in skeletal muscle

All of the blood within the ventricles is ejected during ventricular systole.

Match EKG feature with correct characteristic. -Time during which ventricles are contracting and emptying.

Indicate which ion is involved in each event being described by using the following answer code. -Changes in cytosolic _____ concentration bring about changes in the strength of cardiac contraction.

An increase in heart rate ____________________ the cardiac output.

Use the answer code below to complete the following statements. -Stroke volume can be increased by increasing _ and _.

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

Exam 9: Cardiac Physiology

Use the following answer code to compare the magnitude of the items in question. -A. Stroke volume of right ventricle B. Stroke volume of left ventricle

MATCHING Match term with correct characteristic. -Volume of blood in the ventricle before it contracts

The rate of appearance of the QRS and T waves is unaffected if the heart develops a complete heart block.

Using the following answer code, indicate which pressure relationship exists during the time in question. -when the aortic valve closes

The tricuspid prevents regurgitation of blood from the right ventricle back into the right atrium.

The plateau phase of the action potential in a contractile cardiac muscle cell occurs as a result of activation of slow Ca²? channels.

The average resting heart rate is normally established by the rhythm of the AV node.

Indicate the effects of sympathetic and parasympathetic stimulation on the heart using the following answer code: -decreases the contractility of the atrial muscle

Which number on the diagram represents the ECG wave immediately after the SA node fires?

An increase in cardiac sympathetic activity ____________________ the rate of depolarization of the SA node.

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. -left ventricle

An increase in parasympathetic activity ____________________ the stroke volume.

If the cardiac output is 4,800 ml/min and the heart rate is 60 beats per minute, the stroke volume averages ____ ml.

Cardiac output is (ESV-EDV) x heart rate.

Use the following answer code to compare the magnitude of the items in question. -A. Duration of the refractory period in cardiac muscle B. Duration of the refractory period in skeletal muscle

All of the blood within the ventricles is ejected during ventricular systole.

Match EKG feature with correct characteristic. -Time during which ventricles are contracting and emptying.

Indicate which ion is involved in each event being described by using the following answer code. -Changes in cytosolic _____ concentration bring about changes in the strength of cardiac contraction.

An increase in heart rate ____________________ the cardiac output.

Use the answer code below to complete the following statements. -Stroke volume can be increased by increasing _____ and _____.

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

Use the answer code below to complete the following statements. -Stroke volume can be increased by increasing _ and _.