Question 1

What is the cardiac cycle?

Accepted Answer

A)  The passage of electrical impulses from the AV node to the SN node to heart muscle 
B)  The alternating relaxation and contraction of the heart chambers 
C)  The movement of blood from systemic to pulmonary circulation 
D)  The movement of blood from the heart to the lungs and then back to the heart 
A)  The passage of electrical impulses from the AV node to the SN node to heart muscle 
B)  The alternating relaxation and contraction of the heart chambers 
C)  The movement of blood from systemic to pulmonary circulation 
D)  The movement of blood from the heart to the lungs and then back to the heart

Question 2

White blood cells

Accepted Answer

A)  clot blood. 
B)  are formed in the spleen. 
C)  carry oxygen in blood. 
D)  protect the body from microbes. 
A)  clot blood. 
B)  are formed in the spleen. 
C)  carry oxygen in blood. 
D)  protect the body from microbes.

Question 3

It is important that the atrioventricular (AV) node produce a delay between the contraction of the atria and the contraction of the ventricles because this allows the

Accepted Answer

A)  ventricles to fill to capacity. 
B)  atria to contract in smooth synchrony. 
C)  heart to rest for a brief period of time. 
D)  ventricles to contract in smooth synchrony. 
A)  ventricles to fill to capacity. 
B)  atria to contract in smooth synchrony. 
C)  heart to rest for a brief period of time. 
D)  ventricles to contract in smooth synchrony.

Question 4

Erythropoietin stimulates the manufacture of

Accepted Answer

A)  albumin. 
B)  red blood cells. 
C)  white blood cells. 
D)  platelets. 
A)  albumin. 
B)  red blood cells. 
C)  white blood cells. 
D)  platelets.

Question 5

The aorta

Accepted Answer

A)  is a major vein. 
B)  connects the right and left ventricles of the heart. 
C)  contains blood with low pressure. 
D)  is a major artery. 
A)  is a major vein. 
B)  connects the right and left ventricles of the heart. 
C)  contains blood with low pressure. 
D)  is a major artery.

Question 6

How do lymphatic capillaries differ from blood capillaries?

Accepted Answer

A)  They have ʺdead ends.ʺ 
B)  They are made by lymphocytes. 
C)  They contain plasma. 
D)  They contain red blood cells. 
E)  They have a wall only one cell layer thick. 
A)  They have ʺdead ends.ʺ 
B)  They are made by lymphocytes. 
C)  They contain plasma. 
D)  They contain red blood cells. 
E)  They have a wall only one cell layer thick.

Question 7

The human heart contains cells that do all of the following EXCEPT

Accepted Answer

A)  generate electrical signals. 
B)  contract. 
C)  create new red blood cells. 
D)  respond to signals from the nervous system. 
A)  generate electrical signals. 
B)  contract. 
C)  create new red blood cells. 
D)  respond to signals from the nervous system.

Question 8

The average red blood cell lives for about_________ days.

Accepted Answer

A)  100 
B)  120 
C)  150 
D)  90 
A)  100 
B)  120 
C)  150 
D)  90

Question 9

While sitting in front of the TV, the average person?s heart rate is about 70 beats per minute because the nervous system slows the heart down from the approximately 100 beats per minute that the pacemaker, the_________ node, sets.

Accepted Answer

The answer of While sitting in front of the TV,...

Question 10

When your physician takes your pulse, he or she is feeling the expansion and contraction of your

Accepted Answer

A)  veins or venules. 
B)  capillaries. 
C)  arteries or arterioles. 
D)  arteries and veins. 
A)  veins or venules. 
B)  capillaries. 
C)  arteries or arterioles. 
D)  arteries and veins.

Question 11

Erythrocytes are produced in the

Accepted Answer

A)  spleen. 
B)  heart. 
C)  liver. 
D)  bone marrow. 
A)  spleen. 
B)  heart. 
C)  liver. 
D)  bone marrow.

Question 12

Plasma that leaks out of the blood in the capillary beds is returned to the venous circulation by

Accepted Answer

A)  the small intestine. 
B)  the inflammatory response. 
C)  the lymphatic system. 
D)  suppressor B cells. 
A)  the small intestine. 
B)  the inflammatory response. 
C)  the lymphatic system. 
D)  suppressor B cells.

Question 13

Which of the following includes lymphocytes?

Accepted Answer

A)  Platelets 
B)  Red blood cells 
C)  White blood cells 
D)  Albumin 
A)  Platelets 
B)  Red blood cells 
C)  White blood cells 
D)  Albumin

Question 14

Red blood cells carry oxygen that is attached to a large, iron-containing protein called_________.

Accepted Answer

The answer of Red blood cells carry oxygen that is...

Question 15

Thrombin catalyzes the conversion of the plasma protein fibrinogen into fibrin.

Accepted Answer

A) True 
 B)False

Question 16

Which of these animals has a heart with only two chambers?

Accepted Answer

A)  Cat 
B)  Goldfish 
C)  Hummingbird 
D)  Bullfrog 
E)  Human 
A)  Cat 
B)  Goldfish 
C)  Hummingbird 
D)  Bullfrog 
E)  Human

Question 17

Plasma contains all of the following components EXCEPT

Accepted Answer

A)  albumin. 
B)  water. 
C)  hormones. 
D)  lymph. 
A)  albumin. 
B)  water. 
C)  hormones. 
D)  lymph.

Question 18

Which set of chambers supplies blood to the pulmonary circulation?

Accepted Answer

A)  Left atrium and left ventricle 
B)  Right atrium and right ventricle 
C)  Ventricles 
D)  Atria 
A)  Left atrium and left ventricle 
B)  Right atrium and right ventricle 
C)  Ventricles 
D)  Atria

Question 19

What drives the return of blood to the heart in the systemic veins?

Accepted Answer

A)  Muscles squeezing blood through the veins 
B)  Ciliated cells lining the inside of the veins 
C)  The lymphatic system 
D)  Contractions of the left auricle 
A)  Muscles squeezing blood through the veins 
B)  Ciliated cells lining the inside of the veins 
C)  The lymphatic system 
D)  Contractions of the left auricle

Question 20

In which vertebrate group are there two atria but only a single ventricle?

Accepted Answer

A)  Crocodiles 
B)  Birds 
C)  Fishes 
D)  Some reptiles 
E)  Mammals 
A)  Crocodiles 
B)  Birds 
C)  Fishes 
D)  Some reptiles 
E)  Mammals

Exam 33: Circulation

What is the cardiac cycle?

White blood cells

It is important that the atrioventricular (AV) node produce a delay between the contraction of the atria and the contraction of the ventricles because this allows the

Erythropoietin stimulates the manufacture of

The aorta

How do lymphatic capillaries differ from blood capillaries?

The human heart contains cells that do all of the following EXCEPT

The average red blood cell lives for about_________ days.

While sitting in front of the TV, the average person?s heart rate is about 70 beats per minute because the nervous system slows the heart down from the approximately 100 beats per minute that the pacemaker, the_________ node, sets.

When your physician takes your pulse, he or she is feeling the expansion and contraction of your

Erythrocytes are produced in the

Plasma that leaks out of the blood in the capillary beds is returned to the venous circulation by

Which of the following includes lymphocytes?

Red blood cells carry oxygen that is attached to a large, iron-containing protein called_________.

Thrombin catalyzes the conversion of the plasma protein fibrinogen into fibrin.

Which of these animals has a heart with only two chambers?

Plasma contains all of the following components EXCEPT

Which set of chambers supplies blood to the pulmonary circulation?

What drives the return of blood to the heart in the systemic veins?

In which vertebrate group are there two atria but only a single ventricle?

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

DNA: The Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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