Question 1

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

Accepted Answer

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

Question 2

An increase in heart rate ____________________ the cardiac output.

Accepted Answer

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

Question 3

Which of these statements does NOT correctly describe cardiac muscle cells?

Accepted Answer

A) All of them contract in the heart or none of them contract. 
B) They are capable of graded strength of contraction. 
C)  They are produced constantly after infancy. 
D)  They have an abundance of mitochondria. 
A) All of them contract in the heart or none of them contract. 
B) They are capable of graded strength of contraction. 
C)  They are produced constantly after infancy. 
D)  They have an abundance of mitochondria.

Question 4

The end-diastolic volume is the maximum amount of blood in the ventricle after ventricular filling is complete.

Accepted Answer

A) True 
 B)False

Question 5

The only point of electrical contact between the atria and the ventricles is the AV valve.

Accepted Answer

A) True 
 B)False

Question 6

An increase in parasympathetic activity ____________________ the atrial contractility.

Accepted Answer

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

Question 7

Patients with diastolic heart failure would present with ____________________

Accepted Answer

A) failure of the ventricles to fill normally. 
B) decreased cardiac contractility. 
C)  their heart pumping out more blood than it should with each contraction. 
D)  their heart muscle relaxing longer than it should with each contraction. 
A) failure of the ventricles to fill normally. 
B) decreased cardiac contractility. 
C)  their heart pumping out more blood than it should with each contraction. 
D)  their heart muscle relaxing longer than it should with each contraction.

Question 8

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
-encircles the heart and secretes a lubricating fluid

Accepted Answer

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

Question 9

Match the terms, labelled a. through f., with the descriptions. (Options may be used more than once or not at all.)
a.stroke volume
b.end-diastolic volume
c.cardiac output
d.heart rate
e.end-systolic volume
f.sympathetic activity
-The volume of blood ejected by each ventricle each beat is known as the _____.

Accepted Answer

The answer of Match the terms, labelled a. through f.,...

Question 10

Which of the following factors will NOT increase cardiac output?

Accepted Answer

A) increased venous return 
B) increased parasympathetic stimulation 
C)  increased preload 
D)  increased heart rate 
A) increased venous return 
B) increased parasympathetic stimulation 
C)  increased preload 
D)  increased heart rate

Question 11

The ESV of the heart averages about 140 mL.

Accepted Answer

A) True 
 B)False

Question 12

Pacemaker activity by the Purkinje fibres is an example of an ectopic focus.

Accepted Answer

A) True 
 B)False

Question 13

According to the text, 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.

Question 14

On an electrocardiogram, what represents depolarization of the ventricles?

Accepted Answer

A) P wave 
B) T wave 
C)  S wave 
D)  QRS complex 
A) P wave 
B) T wave 
C)  S wave 
D)  QRS complex

Question 15

The heart muscle receives its oxygen and nutrients directly from the blood within its chambers during ventricular diastole.

Accepted Answer

A) True 
 B)False

Question 16

Match the ions, labelled a. through c., with the events being described. (Options may be used more than once or not at all.)
a.KS1U1P1+S1S1P0
b.NaS1U1P1+S1S1P0
c.CaS1U1P12+S1S1P0
-Slow inward diffusion of _____ is largely responsible for the plateau portion of the cardiac action potential.

Accepted Answer

The answer of Match the ions, labelled a. through c.,...

Question 17

According to the Frank-Starling law of the heart, the greater the stroke volume, the smaller the subsequent end-diastolic volume will be, because as more blood is squeezed out, the heart cannot fill as completely during the next diastole.

Accepted Answer

A) True 
 B)False

Question 18

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 19

If a mitral valve damaged by rheumatic fever fails to open completely, what is this called?

Accepted Answer

A) mitral stenosis 
B) complete heart block 
C)  myocardial ischemia 
D)  mitral incompetence 
A) mitral stenosis 
B) complete heart block 
C)  myocardial ischemia 
D)  mitral incompetence

Question 20

Match the anatomical structures, labelled e., with the heart characteristics. (Options may be used more than once or not at all.)a. through 
a.tricuspid valve
b.myocardium
c.aortic semilunar valve
d.AV node
e.sinoatrial node
-the ventricles' left is much thicker

Accepted Answer

The answer of Match the anatomical structures, labelled e., with...

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

An increase in heart rate ____________________ the cardiac output.

Which of these statements does NOT correctly describe cardiac muscle cells?

The end-diastolic volume is the maximum amount of blood in the ventricle after ventricular filling is complete.

The only point of electrical contact between the atria and the ventricles is the AV valve.

An increase in parasympathetic activity ____________________ the atrial contractility.

Patients with diastolic heart failure would present with ____________________

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 -encircles the heart and secretes a lubricating fluid

Which of the following factors will NOT increase cardiac output?

The ESV of the heart averages about 140 mL.

Pacemaker activity by the Purkinje fibres is an example of an ectopic focus.

According to the text, why is the wall of the left ventricle thicker than the wall of the right ventricle?

On an electrocardiogram, what represents depolarization of the ventricles?

The heart muscle receives its oxygen and nutrients directly from the blood within its chambers during ventricular diastole.

Match the ions, labelled a. through c., with the events being described. (Options may be used more than once or not at all.) a.K⁺ b.Na⁺ c.Ca²⁺ -Slow inward diffusion of _____ is largely responsible for the plateau portion of the cardiac action potential.

According to the Frank-Starling law of the heart, the greater the stroke volume, the smaller the subsequent end-diastolic volume will be, because as more blood is squeezed out, the heart cannot fill as completely during the next diastole.

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.

If a mitral valve damaged by rheumatic fever fails to open completely, what is this called?

Match the anatomical structures, labelled e., with the heart characteristics. (Options may be used more than once or not at all.)a. through a.tricuspid valve b.myocardium c.aortic semilunar valve d.AV node e.sinoatrial node -the ventricles' left is much thicker

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

Exam 7: The Peripheral Nervous System: Efferent Division

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

An increase in heart rate ____________________ the cardiac output.

Which of these statements does NOT correctly describe cardiac muscle cells?

The end-diastolic volume is the maximum amount of blood in the ventricle after ventricular filling is complete.

The only point of electrical contact between the atria and the ventricles is the AV valve.

An increase in parasympathetic activity ____________________ the atrial contractility.

Patients with diastolic heart failure would present with ____________________

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 -encircles the heart and secretes a lubricating fluid

Which of the following factors will NOT increase cardiac output?

The ESV of the heart averages about 140 mL.

Pacemaker activity by the Purkinje fibres is an example of an ectopic focus.

According to the text, why is the wall of the left ventricle thicker than the wall of the right ventricle?

On an electrocardiogram, what represents depolarization of the ventricles?

The heart muscle receives its oxygen and nutrients directly from the blood within its chambers during ventricular diastole.

Match the ions, labelled a. through c., with the events being described. (Options may be used more than once or not at all.) a.K+ b.Na+ c.Ca2+ -Slow inward diffusion of _____ is largely responsible for the plateau portion of the cardiac action potential.

According to the Frank-Starling law of the heart, the greater the stroke volume, the smaller the subsequent end-diastolic volume will be, because as more blood is squeezed out, the heart cannot fill as completely during the next diastole.

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.

If a mitral valve damaged by rheumatic fever fails to open completely, what is this called?

Match the anatomical structures, labelled e., with the heart characteristics. (Options may be used more than once or not at all.)a. through a.tricuspid valve b.myocardium c.aortic semilunar valve d.AV node e.sinoatrial node -the ventricles' left is much thicker

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

Match the ions, labelled a. through c., with the events being described. (Options may be used more than once or not at all.) a.K⁺ b.Na⁺ c.Ca²⁺ -Slow inward diffusion of _____ is largely responsible for the plateau portion of the cardiac action potential.