Question 1

What causes the left heart to fail?

Accepted Answer

A)  myocardial infarction and chronic hypertension 
B)  blood backing up into the veins that return blood to the right heart 
C)  jugular vein distention 
D)  hepatomegaly 
A)  myocardial infarction and chronic hypertension 
B)  blood backing up into the veins that return blood to the right heart 
C)  jugular vein distention 
D)  hepatomegaly A

Question 2

Which of the following occurs during ventricular systole?

Accepted Answer

A)  Blood is pumped out of the ventricles. 
B)  The ventricles fill with blood. 
C)  The AV valves open. 
D)  The semilunar valves close. 
A)  Blood is pumped out of the ventricles. 
B)  The ventricles fill with blood. 
C)  The AV valves open. 
D)  The semilunar valves close. A

Question 3

The normal cardiac output is about 5 L/minute. If this is the case, how many minutes does it take to pump the entire blood volume of the body through the heart?

Accepted Answer

A)  one day 
B)  one hour 
C)  one minute 
D)  one heartbeat 
A)  one day 
B)  one hour 
C)  one minute 
D)  one heartbeat C

Question 4

Contractions of the heart muscle (myocardium), during which blood is pumped out of a chamber, is:

Accepted Answer

A)  heart rate. 
B)  cardiac output. 
C)  diastole. 
D)  systole. 
A)  heart rate. 
B)  cardiac output. 
C)  diastole. 
D)  systole.

Question 5

Which of the following increases stroke volume?

Accepted Answer

A)  (+) chronotropic effect 
B)  (+) dromotropic effect 
C)  decreased EDV 
D)  (+) inotropic effect 
A)  (+) chronotropic effect 
B)  (+) dromotropic effect 
C)  decreased EDV 
D)  (+) inotropic effect

Question 6

Which of the following does not affect a person's heart rate?

Accepted Answer

A)  a person's size 
B)  the person's eye color 
C)  gender 
D)  age 
A)  a person's size 
B)  the person's eye color 
C)  gender 
D)  age

Question 7

A drug, such as atropine, that blocks the muscarinic receptors is most likely to:

Accepted Answer

A)  induce a severe bradycardia. 
B)  cause a (-) dromotropic effect, leading to heart block. 
C)  increase heart rate. 
D)  decrease cardiac output. 
A)  induce a severe bradycardia. 
B)  cause a (-) dromotropic effect, leading to heart block. 
C)  increase heart rate. 
D)  decrease cardiac output.

Question 8

Which of the following is an age-related cardiac change?

Accepted Answer

A)  The resting heart rate increases to 90 beats/minute. 
B)  Starling's law of the heart is lost. 
C)  The sarcoplasmic reticulum loses its ability to store calcium. 
D)  The heart muscle cannot respond as vigorously to the demands of exercise. 
A)  The resting heart rate increases to 90 beats/minute. 
B)  Starling's law of the heart is lost. 
C)  The sarcoplasmic reticulum loses its ability to store calcium. 
D)  The heart muscle cannot respond as vigorously to the demands of exercise.

Question 9

Relaxation of the myocardium is called:

Accepted Answer

A)  heart rate. 
B)  cardiac output. 
C)  diastole. 
D)  systole. 
A)  heart rate. 
B)  cardiac output. 
C)  diastole. 
D)  systole.

Question 10

The cardiac cycle is the sequence of events that occurs during:

Accepted Answer

A)  a 24-hour period. 
B)  one heartbeat. 
C)  one minute. 
D)  a lifetime. 
A)  a 24-hour period. 
B)  one heartbeat. 
C)  one minute. 
D)  a lifetime.

What causes the left heart to fail?

Which of the following occurs during ventricular systole?

The normal cardiac output is about 5 L/minute. If this is the case, how many minutes does it take to pump the entire blood volume of the body through the heart?

Contractions of the heart muscle (myocardium), during which blood is pumped out of a chamber, is:

Which of the following increases stroke volume?

Which of the following does not affect a person's heart rate?

A drug, such as atropine, that blocks the muscarinic receptors is most likely to:

Which of the following is an age-related cardiac change?

Relaxation of the myocardium is called:

The cardiac cycle is the sequence of events that occurs during:

Introduction to the Human Body

Basic Chemistry

Cells

Cell Metabolism

Microbiology Basics

Ttissues and Membranes

Integumentary System and Body Temperature

Skeletal System

Muscular System

Nervous System: Nervous Tissue and Brain

Nervous System: Spinal Cord and Peripheral Nerves

Autonomic Nervous System

Sensory System

Endocrine System

Blood

Anatomy of the Heart

Anatomy of the Blood Vessels

Functions of the Blood Vessels

Lymphatic System

Immune System

Respiratory System

Digestive System

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive Systems

Human Development and Heredity

Filters

Exam 17: Function of the Heart

What causes the left heart to fail?

Which of the following occurs during ventricular systole?

The normal cardiac output is about 5 L/minute. If this is the case, how many minutes does it take to pump the entire blood volume of the body through the heart?

Contractions of the heart muscle (myocardium), during which blood is pumped out of a chamber, is:

Which of the following increases stroke volume?

Which of the following does not affect a person's heart rate?

A drug, such as atropine, that blocks the muscarinic receptors is most likely to:

Which of the following is an age-related cardiac change?

Relaxation of the myocardium is called:

The cardiac cycle is the sequence of events that occurs during:

Introduction to the Human Body

Basic Chemistry

Cells

Cell Metabolism

Microbiology Basics

Ttissues and Membranes

Integumentary System and Body Temperature

Skeletal System

Muscular System

Nervous System: Nervous Tissue and Brain

Nervous System: Spinal Cord and Peripheral Nerves

Autonomic Nervous System

Sensory System

Endocrine System

Blood

Anatomy of the Heart

Anatomy of the Blood Vessels

Functions of the Blood Vessels

Lymphatic System

Immune System

Respiratory System

Digestive System

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive Systems

Human Development and Heredity

Filters