Question 1

An increase in venous return ____________________ the end-diastolic volume.

Accepted Answer

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

Question 2

What percentage of ventricular filling is normally accomplished before atrial contraction begins?

Accepted Answer

A)  0% 
B)  20% 
C)  80% 
D)  50% 
A)  0% 
B)  20% 
C)  80% 
D)  50%

Question 3

The semilunar valves are positioned between the atria and ventricles.

Accepted Answer

A) True 
 B)False

Question 4

The extent of ventricular filling is the preload of the heart,whereas the magnitude of the arterial blood pressure is the afterload of the heart.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following actions is done by the chordae tendineae?

Accepted Answer

A)  keeping the AV valves from closing during ventricular contraction 
B)  holding the AV valves open during diastole 
C)  holding the right and left ventricles together 
D)  transmitting the electrical impulse from the atria to the ventricles 
A)  keeping the AV valves from closing during ventricular contraction 
B)  holding the AV valves open during diastole 
C)  holding the right and left ventricles together 
D)  transmitting the electrical impulse from the atria to the ventricles

Question 6

The parasympathetic nervous system has little effect on what type of activity?

Accepted Answer

A)  atrial 
B)  AV node 
C)  SA node 
D)  ventricular muscle 
A)  atrial 
B)  AV node 
C)  SA node 
D)  ventricular muscle

Question 7

Match heart characteristic with correct anatomical structure by using the answer code (options may be used more than once or not at all):
-contains Purkinjie

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 8

Indicate which pressure relationship exists during the time in question by using the answer code (options may be used more than once or not at all):
-when the aortic valve opens

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 9

The pulmonary circulation carries oxygenated blood from the lungs to the body tissues.

Accepted Answer

A) True 
 B)False

Question 10

What happens when the heart is sympathetically stimulated?

Accepted Answer

A)  ESV will increase. 
B)  Norepinephrine is released from neurons. 
C)  K2+ channels open in greater numbers. 
D)  Cardiac output will decrease. 
A)  ESV will increase. 
B)  Norepinephrine is released from neurons. 
C)  K2+ channels open in greater numbers. 
D)  Cardiac output will decrease.

Question 11

The ____________________ is the volume of blood in the ventricle when ejection is complete.

Accepted Answer

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

Question 12

Ninety-nine percent of the cardiac fibres are specialized for ____________________ whereas the remainder are specialized for ____________________.

Accepted Answer

contraction,conducti

Question 13

Indicate the effects of sympathetic and parasympathetic stimulation on the heart by using the answer code (options may be used more than once or not at all):
-decreases the contractility of the atrial muscle

Accepted Answer

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

Question 14

The SA node is the pacemaker of the heart.

Accepted Answer

A) True 
 B)False

Question 15

Hypertension decreases the afterload and increases the preload.

Accepted Answer

A) True 
 B)False

Question 16

What is a metabolic predictor of heart disease that is independent of one's cholesterol/lipid profile?

Accepted Answer

A)  HDL 
B)  VLDL 
C)  homocysteine 
D)  methionine 
A)  HDL 
B)  VLDL 
C)  homocysteine 
D)  methionine

Question 17

Increased _____ permeability of nodal cells hyperpolarizes the SA node.

Accepted Answer

A)  chloride 
B)  iodide 
C)  potassium 
D)  sodium 
A)  chloride 
B)  iodide 
C)  potassium 
D)  sodium

Question 18

Match the EKG feature with the correct characteristic by using the answer code:
-time during which atria are repolarizing

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 19

What happens during heart failure?

Accepted Answer

A)  The Frank-Starling curve is shifted to the left. 
B)  The heart pumps out a smaller stroke volume than normal for a given end-diastolic volume. 
C)  A compensatory decrease in sympathetic activity increases the relaxation of the heart to normal in the early stages of the disease. 
D)  Blood flows faster in the arterioles. 
A)  The Frank-Starling curve is shifted to the left. 
B)  The heart pumps out a smaller stroke volume than normal for a given end-diastolic volume. 
C)  A compensatory decrease in sympathetic activity increases the relaxation of the heart to normal in the early stages of the disease. 
D)  Blood flows faster in the arterioles.

Question 20

Why is the wall of the left ventricle thicker than the wall of the right ventricle?

Accepted Answer

A)  The left ventricle must pump much more blood than the right ventricle so it must have stronger walls. 
B)  The right ventricle must pump much more blood than the left ventricle so it has a larger chamber to accommodate the blood and a correspondingly thinner wall. 
C)  The left ventricle must pump the same amount of blood into the high-resistance, high-pressure systemic system as does the right ventricle into the low-resistance, low-pressure pulmonary system. 
D)  The right ventricle must create higher tension within its walls. 
A)  The left ventricle must pump much more blood than the right ventricle so it must have stronger walls. 
B)  The right ventricle must pump much more blood than the left ventricle so it has a larger chamber to accommodate the blood and a correspondingly thinner wall. 
C)  The left ventricle must pump the same amount of blood into the high-resistance, high-pressure systemic system as does the right ventricle into the low-resistance, low-pressure pulmonary system. 
D)  The right ventricle must create higher tension within its walls.

An increase in venous return ____________________ the end-diastolic volume.

What percentage of ventricular filling is normally accomplished before atrial contraction begins?

The semilunar valves are positioned between the atria and ventricles.

The extent of ventricular filling is the preload of the heart,whereas the magnitude of the arterial blood pressure is the afterload of the heart.

Which of the following actions is done by the chordae tendineae?

The parasympathetic nervous system has little effect on what type of activity?

Match heart characteristic with correct anatomical structure by using the answer code (options may be used more than once or not at all): -contains Purkinjie

Indicate which pressure relationship exists during the time in question by using the answer code (options may be used more than once or not at all): -when the aortic valve opens

The pulmonary circulation carries oxygenated blood from the lungs to the body tissues.

What happens when the heart is sympathetically stimulated?

The ____________________ is the volume of blood in the ventricle when ejection is complete.

Ninety-nine percent of the cardiac fibres are specialized for whereas the remainder are specialized for .

Indicate the effects of sympathetic and parasympathetic stimulation on the heart by using the answer code (options may be used more than once or not at all): -decreases the contractility of the atrial muscle

The SA node is the pacemaker of the heart.

Hypertension decreases the afterload and increases the preload.

What is a metabolic predictor of heart disease that is independent of one's cholesterol/lipid profile?

Increased _____ permeability of nodal cells hyperpolarizes the SA node.

Match the EKG feature with the correct characteristic by using the answer code: -time during which atria are repolarizing

What happens during heart failure?

Why is the wall of the left ventricle thicker than the wall of the right ventricle?

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System

Principals of Endocrinology; The Central Endocrine Glands

Muscle Physiology

Vascular Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acid Base Balance

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Exam 7: Cardiac Physiology

An increase in venous return ____________________ the end-diastolic volume.

What percentage of ventricular filling is normally accomplished before atrial contraction begins?

The semilunar valves are positioned between the atria and ventricles.

The extent of ventricular filling is the preload of the heart,whereas the magnitude of the arterial blood pressure is the afterload of the heart.

Which of the following actions is done by the chordae tendineae?

The parasympathetic nervous system has little effect on what type of activity?

Match heart characteristic with correct anatomical structure by using the answer code (options may be used more than once or not at all): -contains Purkinjie

Indicate which pressure relationship exists during the time in question by using the answer code (options may be used more than once or not at all): -when the aortic valve opens

The pulmonary circulation carries oxygenated blood from the lungs to the body tissues.

What happens when the heart is sympathetically stimulated?

The ____________________ is the volume of blood in the ventricle when ejection is complete.

Ninety-nine percent of the cardiac fibres are specialized for ____________________ whereas the remainder are specialized for ____________________.

Indicate the effects of sympathetic and parasympathetic stimulation on the heart by using the answer code (options may be used more than once or not at all): -decreases the contractility of the atrial muscle

The SA node is the pacemaker of the heart.

Hypertension decreases the afterload and increases the preload.

What is a metabolic predictor of heart disease that is independent of one's cholesterol/lipid profile?

Increased _____ permeability of nodal cells hyperpolarizes the SA node.

Match the EKG feature with the correct characteristic by using the answer code: -time during which atria are repolarizing

What happens during heart failure?

Why is the wall of the left ventricle thicker than the wall of the right ventricle?

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System

Principals of Endocrinology; The Central Endocrine Glands

Muscle Physiology

Vascular Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acid Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine Glands

The Reproductive System

Filters

Ninety-nine percent of the cardiac fibres are specialized for whereas the remainder are specialized for .