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) arteries 
B) arterioles 
C) capillaries 
D) lymphatics 
E) veins 
A) arteries 
B) arterioles 
C) capillaries 
D) lymphatics 
E) veins

Question 2

What is one reason blood pressure in an artery is higher than in a vein?

Accepted Answer

A) Arteries have thick walls that contain layers of muscle and connective tissue. 
B) Arteries have one-way valves to prevent blood from flowing backward. 
C) Arteries contain only oxygenated blood. 
D) Arteries contain all types of blood cells, whereas veins contain only erythrocytes. 
A) Arteries have thick walls that contain layers of muscle and connective tissue. 
B) Arteries have one-way valves to prevent blood from flowing backward. 
C) Arteries contain only oxygenated blood. 
D) Arteries contain all types of blood cells, whereas veins contain only erythrocytes.

Question 3

Which of the following has the lowest blood pressure?

Accepted Answer

A) arteries 
B) arterioles 
C) capillaries 
D) venules 
E) veins 
A) arteries 
B) arterioles 
C) capillaries 
D) venules 
E) veins

Question 4

Imagine that you are a red blood cell. Describe your "Trek Through the Heart"from when you enter until you finally exit. (Hint: You enter the right atrium. What next?)

Accepted Answer

You enter the right atrium and go into t

Question 5

What is the role of valves in the veins?

Accepted Answer

A) They keep blood from flowing backward when the veins are squeezed by skeletal muscles. 
B) They push the blood upward toward the heart. 
C) They slow blood flow in the veins so that the blood can move more slowly in the capillaries. 
D) They block the flow of blood to the heart until it has time to contract again. 
E) They push the blood back toward the capillaries so that all the oxygen can be removed. 
A) They keep blood from flowing backward when the veins are squeezed by skeletal muscles. 
B) They push the blood upward toward the heart. 
C) They slow blood flow in the veins so that the blood can move more slowly in the capillaries. 
D) They block the flow of blood to the heart until it has time to contract again. 
E) They push the blood back toward the capillaries so that all the oxygen can be removed.

Question 6

Thrombin catalyzes the conversion of the plasma protein fibrinogen into fibrin. True or False?

Accepted Answer

A) True 
 B)False

Question 7

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) low blood pressure 
B) cellular components making up 55% of the blood volume 
C) "thin" blood that does not clot efficiently 
D) a low white blood cell count 
A) low blood pressure 
B) cellular components making up 55% of the blood volume 
C) "thin" blood that does not clot efficiently 
D) a low white blood cell count

Question 8

In an average person, how many liters of extracellular fluid leave the capillaries each day?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 6 
E) 8 
A) 1 
B) 2 
C) 3 
D) 6 
E) 8

Question 9

When your blood pressure is measured from an artery in your arm, it is a measurement of the pressure produced by your:

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

Each of the following types of white blood cells is found within the circulatory system EXCEPT:

Accepted Answer

A) lymphocytes. 
B) leukocytes. 
C) monocytes. 
D) macrophages. 
A) lymphocytes. 
B) leukocytes. 
C) monocytes. 
D) macrophages.

Question 11

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 12

The spleen is part of the lymphatic system. True or False?

Accepted Answer

A) True 
 B)False

Question 13

The period of time in which the ventricles contract is known as ________.

Accepted Answer

The answer of The period of time in which the...

Question 14

Southern Copperhead snake venom contains a protein called disintegrin. Disintegrins bind to a class of membrane receptors called integrins. Platelets use integrin receptors to aggregate at a site of tissue damage. Why does the snake venom contain this molecule?

Accepted Answer

A) After the snake bites its prey, the molecule helps in wound healing. 
B) The molecule helps kill the snake's prey by producing large clots that travel in the body and produce heart attacks and strokes. 
C) The molecule interferes with clot formation so that the venom can travel more efficiently from the site of the bite to the rest of the body. 
D) By binding to the platelets, the molecule inhibits the formation of fibrin. 
A) After the snake bites its prey, the molecule helps in wound healing. 
B) The molecule helps kill the snake's prey by producing large clots that travel in the body and produce heart attacks and strokes. 
C) The molecule interferes with clot formation so that the venom can travel more efficiently from the site of the bite to the rest of the body. 
D) By binding to the platelets, the molecule inhibits the formation of fibrin.

Question 15

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

Accepted Answer

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

Question 16

Which of these blood cells have no nucleus in mammals?

Accepted Answer

A) red blood cells 
B) white blood cells 
C) platelets 
D) All blood cells in mammals lack nuclei. 
A) red blood cells 
B) white blood cells 
C) platelets 
D) All blood cells in mammals lack nuclei.

Question 17

In a grasshopper, all the body tissues are bathed in blood that is in the:

Accepted Answer

A) capillaries. 
B) heart. 
C) tracheae. 
D) spiracles. 
E) hemocoel. 
A) capillaries. 
B) heart. 
C) tracheae. 
D) spiracles. 
E) hemocoel.

Question 18

Imagine that you are about to give blood for the first time. While watching other donors around you, you become pale and have to sit down before you faint. Which vessels constricted to produce this nervous side effect?

Accepted Answer

A) arteries 
B) arterioles 
C) capillaries 
D) venules 
E) veins 
A) arteries 
B) arterioles 
C) capillaries 
D) venules 
E) veins

Question 19

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

Question 20

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

Exam 32: Circulation

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

What is one reason blood pressure in an artery is higher than in a vein?

Which of the following has the lowest blood pressure?

Imagine that you are a red blood cell. Describe your "Trek Through the Heart"from when you enter until you finally exit. (Hint: You enter the right atrium. What next?)

What is the role of valves in the veins?

Thrombin catalyzes the conversion of the plasma protein fibrinogen into fibrin. True or False?

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?

In an average person, how many liters of extracellular fluid leave the capillaries each day?

When your blood pressure is measured from an artery in your arm, it is a measurement of the pressure produced by your:

Each of the following types of white blood cells is found within the circulatory system EXCEPT:

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.

The spleen is part of the lymphatic system. True or False?

The period of time in which the ventricles contract is known as ________.

Southern Copperhead snake venom contains a protein called disintegrin. Disintegrins bind to a class of membrane receptors called integrins. Platelets use integrin receptors to aggregate at a site of tissue damage. Why does the snake venom contain this molecule?

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

Which of these blood cells have no nucleus in mammals?

In a grasshopper, all the body tissues are bathed in blood that is in the:

Imagine that you are about to give blood for the first time. While watching other donors around you, you become pale and have to sit down before you faint. Which vessels constricted to produce this nervous side effect?

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

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

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

The Continuity of Life: Cellular 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 Amidst 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

How Do Ecosystems Work

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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