Question 1

Lymph nodes are sites where

Accepted Answer

A)  lymph vessels join the venous system. 
B)  nerve cell bodies innervating the lymphatic system are concentrated. 
C)  the amount of fluid in the blood is regulated. 
D)  new red blood cells are produced. 
E)  lymphocytes and other cells of the immune system help fight infection. 
A)  lymph vessels join the venous system. 
B)  nerve cell bodies innervating the lymphatic system are concentrated. 
C)  the amount of fluid in the blood is regulated. 
D)  new red blood cells are produced. 
E)  lymphocytes and other cells of the immune system help fight infection. E

Question 2

"Systole" and "diastole" refer to the _______ and _______,respectively,of the _______ in mammals.

Accepted Answer

A)  contraction;relaxation;ventricles 
B)  relaxation;contraction;ventricles 
C)  relaxation;contraction;atria 
D)  contraction;relaxation;atria 
E)  polarization;depolarization;S-A and A-V nodes 
A)  contraction;relaxation;ventricles 
B)  relaxation;contraction;ventricles 
C)  relaxation;contraction;atria 
D)  contraction;relaxation;atria 
E)  polarization;depolarization;S-A and A-V nodes A

Question 3

In the electrocardiogram (EKG)record of a normal cardiac cycle shown below,wave T corresponds to _______ of the _______.

Accepted Answer

A)  depolarization;atria 
B)  depolarization;ventricles 
C)  repolarization;atria 
D)  repolarization;ventricles 
E)  Both a and b 
A)  depolarization;atria 
B)  depolarization;ventricles 
C)  repolarization;atria 
D)  repolarization;ventricles 
E)  Both a and b D

Question 4

What is the correct order in which action potentials spread during a normal heartbeat in the mammalian heart?

Accepted Answer

A)  Sinoatrial node $\rightarrow$ atrioventricular node $\rightarrow$ atrium $\rightarrow$ventricle 
B)  Atrioventricular node $\rightarrow$ atrium $\rightarrow$ ventricle $\rightarrow$ sinoatrial node 
C)  Conducting system $\rightarrow$ atrioventricular node $\rightarrow$ ventricle $\rightarrow$ atrium 
D)  Sinoatrial node $\rightarrow$ conducting system $\rightarrow$ atrioventricular node 
E)  Sinoatrial node $\rightarrow$ atrium $\rightarrow$atrioventricular node $\rightarrow$ conducting system $\rightarrow$ ventricle 
A)  Sinoatrial node $\rightarrow$ atrioventricular node $\rightarrow$ atrium $\rightarrow$ventricle 
B)  Atrioventricular node $\rightarrow$ atrium $\rightarrow$ ventricle $\rightarrow$ sinoatrial node 
C)  Conducting system $\rightarrow$ atrioventricular node $\rightarrow$ ventricle $\rightarrow$ atrium 
D)  Sinoatrial node $\rightarrow$ conducting system $\rightarrow$ atrioventricular node 
E)  Sinoatrial node $\rightarrow$ atrium $\rightarrow$atrioventricular node $\rightarrow$ conducting system $\rightarrow$ ventricle

Question 5

The diameter of a capillary is about the same as that of a(n)

Accepted Answer

A)  arteriole. 
B)  nerve. 
C)  red blood cell. 
D)  valve. 
E)  venule. 
A)  arteriole. 
B)  nerve. 
C)  red blood cell. 
D)  valve. 
E)  venule.

Question 6

Arthropods,many mollusks,and some other invertebrates have a(n)_______ circulatory system.

Accepted Answer

The answer of Arthropods,many mollusks,and some other invertebrates have a(n)_______...

Question 7

What is one advantage of closed circulatory systems as compared to open circulatory systems?

Accepted Answer

A)  Transport is slower in closed systems,increasing the time for gas exchange. 
B)  Closed systems have a higher capacity to direct blood to specific tissues. 
C)  In closed systems,cells and large molecules can mix with nutrients absorbed in the intestines and directly feed all cells. 
D)  In closed systems,there is no distinction between blood and interstitial fluid. 
E)  Closed systems use less energy. 
A)  Transport is slower in closed systems,increasing the time for gas exchange. 
B)  Closed systems have a higher capacity to direct blood to specific tissues. 
C)  In closed systems,cells and large molecules can mix with nutrients absorbed in the intestines and directly feed all cells. 
D)  In closed systems,there is no distinction between blood and interstitial fluid. 
E)  Closed systems use less energy.

Question 8

In humans,the _______ empties into the right atrium.

Accepted Answer

A)  inferior vena cava 
B)  pulmonary vein 
C)  superior vena cava 
D)  pulmonary artery 
E)  Both a and c 
A)  inferior vena cava 
B)  pulmonary vein 
C)  superior vena cava 
D)  pulmonary artery 
E)  Both a and c

Question 9

In the human heart,blood is pumped from the left ventricle into the

Accepted Answer

A)  right ventricle. 
B)  left atrium. 
C)  right atrium. 
D)  pulmonary circuit. 
E)  systemic circuit. 
A)  right ventricle. 
B)  left atrium. 
C)  right atrium. 
D)  pulmonary circuit. 
E)  systemic circuit.

Question 10

Which statement about the crustacean circulatory system is false?

Accepted Answer

A)  A heart is usually present. 
B)  Blood is pumped out of openings in the heart called ostia. 
C)  Blood is pumped out of the heart into arteries. 
D)  Crustaceans have a single-chambered heart. 
E)  The heart is stimulated to beat by nerve impulses. 
A)  A heart is usually present. 
B)  Blood is pumped out of openings in the heart called ostia. 
C)  Blood is pumped out of the heart into arteries. 
D)  Crustaceans have a single-chambered heart. 
E)  The heart is stimulated to beat by nerve impulses.

Question 11

Which sequence represents the correct order of blood flow in the mammalian circulatory system?

Accepted Answer

A)  Heart $\rightarrow$ lungs $\rightarrow$systemic tissues 
B)  Heart $\rightarrow$ systemic tissues $\rightarrow$ lungs 
C)  Heart $\rightarrow$ systemic tissues $\rightarrow$lungs $\rightarrow$systemic tissues 
D)  Systemic tissues $\rightarrow$ heart $\rightarrow$lungs $\rightarrow$ heart 
E)  Heart $\rightarrow$ lungs $\rightarrow$ heart $\rightarrow$ systemic tissues 
A)  Heart $\rightarrow$ lungs $\rightarrow$systemic tissues 
B)  Heart $\rightarrow$ systemic tissues $\rightarrow$ lungs 
C)  Heart $\rightarrow$ systemic tissues $\rightarrow$lungs $\rightarrow$systemic tissues 
D)  Systemic tissues $\rightarrow$ heart $\rightarrow$lungs $\rightarrow$ heart 
E)  Heart $\rightarrow$ lungs $\rightarrow$ heart $\rightarrow$ systemic tissues

Question 12

During the cardiac cycle in mammals,the blood pressure in the aorta is greatest

Accepted Answer

A)  during diastole. 
B)  when the atria contract. 
C)  when the aortic and pulmonary valves are closed. 
D)  during systole. 
E)  when the atrioventricular valves are open. 
A)  during diastole. 
B)  when the atria contract. 
C)  when the aortic and pulmonary valves are closed. 
D)  during systole. 
E)  when the atrioventricular valves are open.

Question 13

Biologists are studying the anatomy of a newly discovered whale whose carcass has washed up on shore.In examining a cross section of its flipper,they notice a vein and an artery running in parallel.The artery can be distinguished from the vein because the artery has

Accepted Answer

A)  a larger interior diameter. 
B)  more muscle tissue and elastin in the wall. 
C)  a lining of vascular endothelium. 
D)  valves to prevent backflow. 
E)  All of the above 
A)  a larger interior diameter. 
B)  more muscle tissue and elastin in the wall. 
C)  a lining of vascular endothelium. 
D)  valves to prevent backflow. 
E)  All of the above

Question 14

The pacemaker function in the mammalian heart is performed by the

Accepted Answer

A)  sinoatrial node. 
B)  atrioventricular node. 
C)  conducting fibers. 
D)  bundle fibers. 
E)  ventricular mass. 
A)  sinoatrial node. 
B)  atrioventricular node. 
C)  conducting fibers. 
D)  bundle fibers. 
E)  ventricular mass.

Question 15

Which statement about the heartbeat in mammals is true?

Accepted Answer

A)  Only the ventricles contract in unison. 
B)  Only the atria contract in unison. 
C)  Atria contract in unison,and ventricles contract in unison. 
D)  The atrium and ventricle on the right side of the heart contract in unison. 
E)  The atrium and ventricle on the left side of the heart contract in unison. 
A)  Only the ventricles contract in unison. 
B)  Only the atria contract in unison. 
C)  Atria contract in unison,and ventricles contract in unison. 
D)  The atrium and ventricle on the right side of the heart contract in unison. 
E)  The atrium and ventricle on the left side of the heart contract in unison.

Question 16

Which statement about the open circulatory system of a crayfish is false?

Accepted Answer

A)  A pump is present. 
B)  Blood is returned to the heart in veins. 
C)  The blood is part of the interstitial fluid. 
D)  Interstitial fluid bathes the tissues directly. 
E)  Crayfish have many arteries,which extend forward and backward from the heart. 
A)  A pump is present. 
B)  Blood is returned to the heart in veins. 
C)  The blood is part of the interstitial fluid. 
D)  Interstitial fluid bathes the tissues directly. 
E)  Crayfish have many arteries,which extend forward and backward from the heart.

Question 17

Which animal has an open circulatory system?

Accepted Answer

A)  Bat 
B)  Earthworm 
C)  Human 
D)  Lobster 
E)  Lizard 
A)  Bat 
B)  Earthworm 
C)  Human 
D)  Lobster 
E)  Lizard

Question 18

Which statement about the function of blood is false?

Accepted Answer

A)  It transports O2 and CO2. 
B)  It transports body heat to where it is most needed. 
C)  It produces red blood cells. 
D)  It acts as a buffer to changes in pH. 
E)  It transports nutrients to cells. 
A)  It transports O2 and CO2. 
B)  It transports body heat to where it is most needed. 
C)  It produces red blood cells. 
D)  It acts as a buffer to changes in pH. 
E)  It transports nutrients to cells.

Question 19

A typical circulatory system consists of

Accepted Answer

A)  a muscular pump only. 
B)  a muscular pump,a fluid,and a series of conduits. 
C)  blood and blood vessels only. 
D)  a fluid and a series of conduits only. 
E)  blood,spicules,and trachea. 
A)  a muscular pump only. 
B)  a muscular pump,a fluid,and a series of conduits. 
C)  blood and blood vessels only. 
D)  a fluid and a series of conduits only. 
E)  blood,spicules,and trachea.

Question 20

Platelets

Accepted Answer

A)  prevent a histamine reaction from occurring when a person is stung by a wasp. 
B)  activate leukocytes. 
C)  combine with oxygen to make hemoglobin. 
D)  aid blood clotting to prevent excess bleeding. 
E)  are broken pieces of white blood cells. 
A)  prevent a histamine reaction from occurring when a person is stung by a wasp. 
B)  activate leukocytes. 
C)  combine with oxygen to make hemoglobin. 
D)  aid blood clotting to prevent excess bleeding. 
E)  are broken pieces of white blood cells.

Exam 32: Circulation

Lymph nodes are sites where

"Systole" and "diastole" refer to the _______ and _______,respectively,of the _______ in mammals.

In the electrocardiogram (EKG)record of a normal cardiac cycle shown below,wave T corresponds to _______ of the _______.

What is the correct order in which action potentials spread during a normal heartbeat in the mammalian heart?

The diameter of a capillary is about the same as that of a(n)

Arthropods,many mollusks,and some other invertebrates have a(n)_______ circulatory system.

What is one advantage of closed circulatory systems as compared to open circulatory systems?

In humans,the _______ empties into the right atrium.

In the human heart,blood is pumped from the left ventricle into the

Which statement about the crustacean circulatory system is false?

Which sequence represents the correct order of blood flow in the mammalian circulatory system?

During the cardiac cycle in mammals,the blood pressure in the aorta is greatest

Biologists are studying the anatomy of a newly discovered whale whose carcass has washed up on shore.In examining a cross section of its flipper,they notice a vein and an artery running in parallel.The artery can be distinguished from the vein because the artery has

The pacemaker function in the mammalian heart is performed by the

Which statement about the heartbeat in mammals is true?

Which statement about the open circulatory system of a crayfish is false?

Which animal has an open circulatory system?

Which statement about the function of blood is false?

A typical circulatory system consists of

Platelets

Introduction

The Chemistry and Energy of Life

Nucleic Acids, Proteins, and Enzymes

Cells: the Working Units of Life

Cell Membranes and Signaling

Pathways That Harvest and Store Chemical Energy

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

DNA and Its Role in Heredity

From Dna to Protein: Gene Expression

Regulation of Gene Expression

Genomes

Biotechnology

Genes, Development, and Evolution

Processes of Evolution

Reconstructing and Using Phylogenies

Speciation

The History of Life on Earth

Bacteria, Archaea, and Viruses

The Origin and Diversification of Eukaryotes

The Evolution of Plants

The Evolution and Diversity of Fungi

Animal Origins and Diversity

The Plant Body

Plant Nutrition and Transport

Plant Growth and Development

Reproduction of Flowering Plants

Plants in the Environment

Fundamentals of Animal Function

Nutrition and Digestion

Breathing

Muscle and Movement

Neurons, Sense Organs, and Nervous Systems

Nervous and Endocrine Control

Water and Salts: Excretion

Animal Reproduction

Animal Development

Immunology: Animal Defense Systems

Animal Behavior

The Distribution of Earths Ecological Systems

Populations

Ecological and Evolutionary Consequences of Interactions Within and Among Species

Ecological Communities

The Global Ecosystem

Filters

"Systole" and "diastole" refer to the ___ and _,respectively,of the _____ in mammals.

In the electrocardiogram (EKG)record of a normal cardiac cycle shown below,wave T corresponds to _ of the _.