Question 1

Cardiac muscle receives its blood supply primarily during ventricular systole when blood is being pumped out into the aorta.

Accepted Answer

A) True 
 B)False

Question 2

Which of these statements correctly describes the AV nodal delay?

Accepted Answer

A) It ensures that the atria contract and empty their contents into the ventricles prior to ventricular systole. 
B) It ensures that the ventricles contract prior to atrial systole. 
C)  It ensures that tetanic contraction of cardiac muscle is impossible. 
D)  It is shortened by parasympathetic stimulation. 
A) It ensures that the atria contract and empty their contents into the ventricles prior to ventricular systole. 
B) It ensures that the ventricles contract prior to atrial systole. 
C)  It ensures that tetanic contraction of cardiac muscle is impossible. 
D)  It is shortened by parasympathetic stimulation.

Question 3

Cardiac tamponade refers to failure of the AV node to transmit the action potential from the atria to the ventricles.

Accepted Answer

A) True 
 B)False

Question 4

Match the term, labelled a. through g., with their correct characteristic.
a.gap junction
b.HDL
c.functional syncytium
d.heart valve
e.pericardial sac
f.LDL
g.adenosine
-area of low electrical resistance that allows an action potential to spread from one cardiac cell to surrounding cells

Accepted Answer

The answer of Match the term, labelled a. through g.,...

Question 5

The ____________________ is the volume of blood pumped by each ventricle/beat.

Accepted Answer

The answer of The ____________________ is the volume of blood...

Question 6

What is the membrane potential of cardiac muscle cells at rest?

Accepted Answer

A) -110 mV 
B) -90 mV 
C)  -60 mV 
D)  -50 mV 
A) -110 mV 
B) -90 mV 
C)  -60 mV 
D)  -50 mV

Question 7

Which structures join adjacent cardiac muscle cells end-to-end in the ventricles?

Accepted Answer

A) intercalated discs 
B) sarcomeres 
C)  Purkinje fibres 
D)  sinoatrial nodes 
A) intercalated discs 
B) sarcomeres 
C)  Purkinje fibres 
D)  sinoatrial nodes

Question 8

The heart is posterior to the sternum.

Accepted Answer

A) True 
 B)False

Question 9

The ____________________ is the normal pacemaker of the heart.

Accepted Answer

The answer of The ____________________ is the normal pacemaker of...

Question 10

____________________ is the insufficient circulation of oxygenated blood to cardiac muscle in order to maintain its aerobic metabolism.

Accepted Answer

The answer of ____________________ is the insufficient circulation of oxygenated...

Question 11

An increase in venous return ____________________ the stroke volume.

Accepted Answer

The answer of An increase in venous return ____________________ the...

Question 12

The bundle of His and Purkinje system facilitate the rapid spread of the action potential throughout the ventricles.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following is correct for the first heart sound?

Accepted Answer

A) It occurs when the AV valves open. 
B) It occurs when the semilunar valves close. 
C)  It signals the end of ventricular systole. 
D)  It signals the onset of ventricular systole. 
A) It occurs when the AV valves open. 
B) It occurs when the semilunar valves close. 
C)  It signals the end of ventricular systole. 
D)  It signals the onset of ventricular systole.

Question 14

Most ventricular filling is accomplished during atrial contraction.

Accepted Answer

A) True 
 B)False

Question 15

Match the pressure relationships, labelled e., with the times in question. (Options may be used more than once or not at all.)a. through 
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
-during ventricular diastole

Accepted Answer

The answer of Match the pressure relationships, labelled e., with...

Question 16

Match the valve abnormalities, labelled a. and b., with the descriptions. (Options may be used more than once or not at all.)
a.valvular stenosis
b.valvular insufficiency
-valve does not open completely

Accepted Answer

The answer of Match the valve abnormalities, labelled a. and...

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

Which of the following occurrences causes the dicrotic notch on the aortic pressure curve?

Accepted Answer

A) a disturbance set up during closure of the aortic valve 
B) a disturbance set up during closure of the left atrioventricular valve 
C)  elastic recoil of the arterial walls during ventricular diastole 
D)  turbulent flow through a stenotic valve 
A) a disturbance set up during closure of the aortic valve 
B) a disturbance set up during closure of the left atrioventricular valve 
C)  elastic recoil of the arterial walls during ventricular diastole 
D)  turbulent flow through a stenotic valve

Question 19

Hypertension decreases the afterload and increases the preload.

Accepted Answer

A) True 
 B)False

Question 20

Match the term, labelled a. through g., with their correct characteristic.
a.gap junction
b.HDL
c.functional syncytium
d.heart valve
e.pericardial sac
f.LDL
g.adenosine
-carries cholesterol away from cells

Accepted Answer

The answer of Match the term, labelled a. through g.,...

Cardiac muscle receives its blood supply primarily during ventricular systole when blood is being pumped out into the aorta.

Which of these statements correctly describes the AV nodal delay?

Cardiac tamponade refers to failure of the AV node to transmit the action potential from the atria to the ventricles.

Match the term, labelled a. through g., with their correct characteristic. a.gap junction b.HDL c.functional syncytium d.heart valve e.pericardial sac f.LDL g.adenosine -area of low electrical resistance that allows an action potential to spread from one cardiac cell to surrounding cells

The ____________________ is the volume of blood pumped by each ventricle/beat.

What is the membrane potential of cardiac muscle cells at rest?

Which structures join adjacent cardiac muscle cells end-to-end in the ventricles?

The heart is posterior to the sternum.

The ____________________ is the normal pacemaker of the heart.

____________________ is the insufficient circulation of oxygenated blood to cardiac muscle in order to maintain its aerobic metabolism.

An increase in venous return ____________________ the stroke volume.

The bundle of His and Purkinje system facilitate the rapid spread of the action potential throughout the ventricles.

Which of the following is correct for the first heart sound?

Most ventricular filling is accomplished during atrial contraction.

Match the valve abnormalities, labelled a. and b., with the descriptions. (Options may be used more than once or not at all.) a.valvular stenosis b.valvular insufficiency -valve does not open completely

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

Which of the following occurrences causes the dicrotic notch on the aortic pressure curve?

Hypertension decreases the afterload and increases the preload.

Match the term, labelled a. through g., with their correct characteristic. a.gap junction b.HDL c.functional syncytium d.heart valve e.pericardial sac f.LDL g.adenosine -carries cholesterol away from cells

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; Special Senses

Muscle Physiology

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

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Exam 7: The Peripheral Nervous System: Efferent Division

Cardiac muscle receives its blood supply primarily during ventricular systole when blood is being pumped out into the aorta.

Which of these statements correctly describes the AV nodal delay?

Cardiac tamponade refers to failure of the AV node to transmit the action potential from the atria to the ventricles.

Match the term, labelled a. through g., with their correct characteristic. a.gap junction b.HDL c.functional syncytium d.heart valve e.pericardial sac f.LDL g.adenosine -area of low electrical resistance that allows an action potential to spread from one cardiac cell to surrounding cells

The ____________________ is the volume of blood pumped by each ventricle/beat.

What is the membrane potential of cardiac muscle cells at rest?

Which structures join adjacent cardiac muscle cells end-to-end in the ventricles?

The heart is posterior to the sternum.

The ____________________ is the normal pacemaker of the heart.

____________________ is the insufficient circulation of oxygenated blood to cardiac muscle in order to maintain its aerobic metabolism.

An increase in venous return ____________________ the stroke volume.

The bundle of His and Purkinje system facilitate the rapid spread of the action potential throughout the ventricles.

Which of the following is correct for the first heart sound?

Most ventricular filling is accomplished during atrial contraction.

Match the valve abnormalities, labelled a. and b., with the descriptions. (Options may be used more than once or not at all.) a.valvular stenosis b.valvular insufficiency -valve does not open completely

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

Which of the following occurrences causes the dicrotic notch on the aortic pressure curve?

Hypertension decreases the afterload and increases the preload.

Match the term, labelled a. through g., with their correct characteristic. a.gap junction b.HDL c.functional syncytium d.heart valve e.pericardial sac f.LDL g.adenosine -carries cholesterol away from cells

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; Special Senses

Muscle Physiology

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

Filters