Question 1

Which of the following types of blood vessels are directly involved in the exchange of materials between blood and tissues?

Accepted Answer

A)  Veins 
B)  Capillaries 
C)  Arterioles 
D)  Arteries 
E)  Lymphatics 
A)  Veins 
B)  Capillaries 
C)  Arterioles 
D)  Arteries 
E)  Lymphatics B

Question 2

How many molecules of oxygen can bind with one molecule of human hemoglobin?

Accepted Answer

A)  One 
B)  Two 
C)  Three 
D)  Four 
E)  Five 
A)  One 
B)  Two 
C)  Three 
D)  Four 
E)  Five D

Question 3

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

Accepted Answer

A) True 
 B)False  True

Question 4

Platelets are large cells that aid in blood clotting.

Accepted Answer

A) True 
 B)False

Question 5

In mammals, blood with a low oxygen content enters the _ of the heart.

Accepted Answer

A)  left ventricle 
B)  left atrium 
C)  right atrium 
D)  right ventricle 
E)  aorta 
A)  left ventricle 
B)  left atrium 
C)  right atrium 
D)  right ventricle 
E)  aorta

Question 6

In a random screening of athletes at a recent event, a runner was disqualified for testing positive for an injected form of erythropoietin. Which of the following is a consequence of extra erythropoietin in the circulatory system?

Accepted Answer

A)  More red blood cells 
B)  "Thin" blood that does not clot efficiently 
C)  Low blood pressure 
D)  A low white blood cell count 
A)  More red blood cells 
B)  "Thin" blood that does not clot efficiently 
C)  Low blood pressure 
D)  A low white blood cell count

Question 7

The accumulation of carbon dioxide, lactic acid, or other cellular waste causes nearby precapillary sphincters to

Accepted Answer

A)  relax. 
B)  contract. 
C)  shorten. 
D)  lengthen. 
A)  relax. 
B)  contract. 
C)  shorten. 
D)  lengthen.

Question 8

Which of these animals has a closed circulatory system?

Accepted Answer

A)  Snail 
B)  Earthworm 
C)  Spider 
D)  Clam 
E)  Insect 
A)  Snail 
B)  Earthworm 
C)  Spider 
D)  Clam 
E)  Insect

Question 9

Which heart chamber is the most muscular?

Accepted Answer

A)  Left ventricle 
B)  Right ventricle 
C)  Left atrium 
D)  Right atrium 
A)  Left ventricle 
B)  Right ventricle 
C)  Left atrium 
D)  Right atrium

Question 10

Erythropoietin stimulates the manufacture of

Accepted Answer

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

Question 11

The average red blood cell lives for about days.

Accepted Answer

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

Question 12

Bone marrow is part of the lymphatic system.

Accepted Answer

A) True 
 B)False

Question 13

Gap junctions

Accepted Answer

A)  are found in white blood cells. 
B)  allow the rapid passage of electrical signals among heart cells. 
C)  connect veins and arteries. 
D)  prevent the backflow of blood from the ventricles to the atrium. 
A)  are found in white blood cells. 
B)  allow the rapid passage of electrical signals among heart cells. 
C)  connect veins and arteries. 
D)  prevent the backflow of blood from the ventricles to the atrium.

Question 14

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

Accepted Answer

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

Question 15

Atherosclerosis

Accepted Answer

A)  is a condition of the veins. 
B)  is another name for high blood pressure. 
C)  causes a loss of plaque from the walls of the arteries. 
D)  reduces blood flow in arteries. 
E)  is caused by a diet high in salt. 
A)  is a condition of the veins. 
B)  is another name for high blood pressure. 
C)  causes a loss of plaque from the walls of the arteries. 
D)  reduces blood flow in arteries. 
E)  is caused by a diet high in salt.

Question 16

Which of the following have four- chambered hearts?

Accepted Answer

A)  Birds 
B)  Spiders 
C)  Frogs 
D)  Fishes 
A)  Birds 
B)  Spiders 
C)  Frogs 
D)  Fishes

Question 17

Long- distance runners like to train at high altitudes because the lack of oxygen there stimulates the

Accepted Answer

A)  muscles to contract less strongly. 
B)  muscles to contract faster. 
C)  body to produce more lung tissue. 
D)  capillaries to diffuse oxygen more slowly. 
E)  bone marrow to make more erythrocytes. 
A)  muscles to contract less strongly. 
B)  muscles to contract faster. 
C)  body to produce more lung tissue. 
D)  capillaries to diffuse oxygen more slowly. 
E)  bone marrow to make more erythrocytes.

Question 18

What two organs are considered to be part of the lymphatic system?

Accepted Answer

A)  Heart and lungs 
B)  Spleen and thymus 
C)  Thalamus and hypothalamus 
D)  Gall bladder and kidneys 
E)  Pancreas and liver 
A)  Heart and lungs 
B)  Spleen and thymus 
C)  Thalamus and hypothalamus 
D)  Gall bladder and kidneys 
E)  Pancreas and liver

Question 19

White blood cells

Accepted Answer

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

Question 20

Based on this figure, which of the following occurs first?

Accepted Answer

A)  Prothrombin conversion 
B)  Fibrin production 
C)  Fibrinogen conversion 
A)  Prothrombin conversion 
B)  Fibrin production 
C)  Fibrinogen conversion

Exam 33: Circulation

Which of the following types of blood vessels are directly involved in the exchange of materials between blood and tissues?

How many molecules of oxygen can bind with one molecule of human hemoglobin?

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

Platelets are large cells that aid in blood clotting.

In mammals, blood with a low oxygen content enters the _ of the heart.

In a random screening of athletes at a recent event, a runner was disqualified for testing positive for an injected form of erythropoietin. Which of the following is a consequence of extra erythropoietin in the circulatory system?

The accumulation of carbon dioxide, lactic acid, or other cellular waste causes nearby precapillary sphincters to

Which of these animals has a closed circulatory system?

Which heart chamber is the most muscular?

Erythropoietin stimulates the manufacture of

The average red blood cell lives for about days.

Bone marrow is part of the lymphatic system.

Gap junctions

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

Atherosclerosis

Which of the following have four- chambered hearts?

Long- distance runners like to train at high altitudes because the lack of oxygen there stimulates the

What two organs are considered to be part of the lymphatic system?

White blood cells

Based on this figure, which of the following occurs first?

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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