Question 1

The heart rate speeds up or slows down because the

Accepted Answer

A)   AV node detects lower levels of oxygen and sends faster signals to the SA node.
B)   brain consciously detects the need for more oxygen and intentionally stimulates the heart.
C)   medulla oblongata, through the autonomic system, stimulates or depresses heart rate based on activity and stress.
D)   hormone epinephrine inhibits the heartbeat.
E)   SA node detects lower levels of oxygen and sends faster signals to the AV node.F) A) and B)
G) C) and D)

Question 2

Lymph,such as that collected under a blister,contains all the components of blood except

Accepted Answer

A)   water.
B)   salts.
C)   sugars.
D)   dissolved gases.
E)   blood cells, albumin and other plasma proteins.F) A) and B)
G) A) and C)

Question 3

The sound of a heartbeat results when the ventricles contract and blood is surged out of the heart.

Accepted Answer

A) True 
 B)False

Question 4

Hemoglobin is NOT

Accepted Answer

A)   carried in red blood cells.
B)   an oxygen transporter.
C)   made of protein and heme.
D)   normally found free in the plasma.
E)   a red pigment.F) A) and E)
G) A) and D)

Question 5

"Artery" and "vein" are defined by whether they leave or enter the heart.If they were defined by whether they carried oxygenated or deoxygenated blood,we would have to change the name(s) of

Accepted Answer

A)   the hepatic portal vein to a hepatic portal artery.
B)   the hepatic and renal systems (they would have to be switched) .
C)   the pulmonary artery and vein (they would have to be switched) .
D)   the coronary artery and vein (they would have to be switched) .
E)   the aorta and vena cava.F) C) and D)
G) D) and E)

Question 6

Compare the structural differences between the walls of arteries and veins.

Accepted Answer

Both arterial and venous walls are compo...

Question 7

In the tissues,oxygen and nutrients enter the capillaries and carbon dioxide and wastes leave the capillaries.

Accepted Answer

A) True 
 B)False

Question 8

The blood vessel that provides oxygen to the heart tissue is the

Accepted Answer

A)   pulmonary artery.
B)   coronary artery.
C)   left carotid artery.
D)   renal artery.
E)   left subclavian artery.F) C) and E)
G) A) and B)

Question 9

A person with normal blood volume and white cell count but low red cell count or low hemoglobin content may be suffering from

Accepted Answer

A)   hemophilia.
B)   anemia.
C)   leukemia.
D)   mononucleosis.
E)   blood poisoning.F) C) and D)
G) All of the above

Question 10

The systemic circuit circulates blood from the

Accepted Answer

A)   right ventricle to left atrium.
B)   left ventricle to left atrium.
C)   right ventricle to right atrium.
D)   left ventricle to right atrium.
E)   pulmonary artery to the lungs.F) All of the above
G) B) and E)

Question 11

Oxygenated blood enters the heart at the

Accepted Answer

A)   left atrium.
B)   left ventricle.
C)   right atrium.
D)   right ventricle.
E)   pulmonary arteries.F) C) and D)
G) B) and E)

Question 12

A reading of 120/80 indicates blood velocity.

Accepted Answer

A) True 
 B)False

Question 13

Researchers have long attempted to find a substitute for red blood cells,specifically the hemoglobin carrying ability.With the low but possible risk of disease transfer from blood transfusion,such a synthetic substance could be guaranteed safe if it was effective.Which of the following properties would be important for "artificial red blood cells"?

Accepted Answer

A)   must attach to and never release oxygen
B)   must release oxygen to any other medium despite concentration gradient
C)   would bind to iron molecules already bound to other artificial blood units
D)   must provide the clotting reaction
E)   would bind to oxygen in a high oxygen concentration solution and release oxygen when in a low oxygen concentration solutionF) A) and B)
G) None of the above

Question 14

Neutrophils and lymphocytes are types of

Accepted Answer

A)   platelets.
B)   red blood cells.
C)   white blood cells.
D)   plasma cells.
E)   epithelial cells.F) C) and E)
G) A) and D)

Question 15

If a person has a blood pressure of 120/80,the "120" refers to the

Accepted Answer

A)   diastolic pressure.
B)   systolic pressure.
C)   pulse pressure.
D)   capillary pressure.
E)   venous pressure.F) D) and E)
G) B) and D)

Question 16

The pulmonary semilunar valve prevents blood from re-entering the

Accepted Answer

A)   right atrium.
B)   left atrium.
C)   right ventricle.
D)   left ventricle.
E)   pulmonary trunk.F) A) and B)
G) A) and C)

Question 17

The two enzymes in the clotting process are

Accepted Answer

A)   fibrin and prothrombin activator.
B)   prothrombin activator and thrombin.
C)   platelets and fibrin.
D)   prothrombin and calcium.
E)   albumin and hemoglobin.F) A) and B)
G) C) and E)

Question 18

In a hypothetical experiment,the blood flow between two dogs is joined and one dog is stressed so that its heart rate goes up rapidly.What will happen to the heart rate of the second dog?

Accepted Answer

A)   It will remain calm because the heart rate is determined intrinsically in each heart.
B)   Heart rate will go up due to an increase in epinephrine and norepinephrine in the blood.
C)   Heart rate will go up due to signals from the first dog's SA node.
D)   It will remain calm because there is no connection of the dogs' sympathetic nervous systems.
E)   The heart rate of the second dog will decrease to compensate for the speed of the first dog's heart.F) B) and E)
G) B) and D)

Question 19

You are unable to see arteries and arterioles without a microscope.

Accepted Answer

A) True 
 B)False

Question 20

What is the correct sequence in which a drop of blood returning from the body encounters the heart valves?

Accepted Answer

A)   right atrioventricular valve  →\rarr→ aortic semilunar valve  →\rarr→ left atrioventricular valve  →\rarr→ pulmonary semilunar valve
B)   right atrioventricular valve  →\rarr→ pulmonary semilunar valve →\rarr→ left atrioventricular valve  →\rarr→ aortic semilunar valve
C)   left atrioventricular valve  →\rarr→ pulmonary semilunar valve  →\rarr→ right atrioventricular valve  →\rarr→ aortic semilunar valve
D)   pulmonary semilunar valve  →\rarr→ left atrioventricular valve  →\rarr→ aortic semilunar valve  →\rarr→ right atrioventricular valve
E)   left atrioventricular valve  →\rarr→ aortic semilunar valve  →\rarr→ right atrioventricular valve  →\rarr→ pulmonary semilunar valve F) All of the above
G) None of the above

Exam 12: Cardiovascular System

The systemic circuit circulates blood from the

Correct Answer
verified

"Artery" and "vein" are defined by whether they leave or enter the heart.If they were defined by whether they carried oxygenated or deoxygenated blood,we would have to change the name(s) of

Correct Answer
verified

The sound of a heartbeat results when the ventricles contract and blood is surged out of the heart.

Correct Answer
verified

If a person has a blood pressure of 120/80,the "120" refers to the

Correct Answer
verified

Compare the structural differences between the walls of arteries and veins.

Correct Answer
verified
Both arterial and venous walls are compo...
View Answer

Neutrophils and lymphocytes are types of

Correct Answer
verified

The two enzymes in the clotting process are

Correct Answer
verified

Oxygenated blood enters the heart at the

Correct Answer
verified

In a hypothetical experiment,the blood flow between two dogs is joined and one dog is stressed so that its heart rate goes up rapidly.What will happen to the heart rate of the second dog?

Correct Answer
verified

Lymph,such as that collected under a blister,contains all the components of blood except

Correct Answer
verified

In the tissues,oxygen and nutrients enter the capillaries and carbon dioxide and wastes leave the capillaries.

Correct Answer
verified

A person with normal blood volume and white cell count but low red cell count or low hemoglobin content may be suffering from

Correct Answer
verified

Correct Answer
verified

A reading of 120/80 indicates blood velocity.

Correct Answer
verified

The pulmonary semilunar valve prevents blood from re-entering the

Correct Answer
verified

The blood vessel that provides oxygen to the heart tissue is the

Correct Answer
verified

What is the correct sequence in which a drop of blood returning from the body encounters the heart valves?

Correct Answer
verified

Hemoglobin is NOT

Correct Answer
verified

You are unable to see arteries and arterioles without a microscope.

Correct Answer
verified

The heart rate speeds up or slows down because the

Correct Answer
verified

Exam 12: Cardiovascular System

The systemic circuit circulates blood from the

Correct AnswerverifiedShow Answer

"Artery" and "vein" are defined by whether they leave or enter the heart.If they were defined by whether they carried oxygenated or deoxygenated blood,we would have to change the name(s) of

Correct AnswerverifiedShow Answer

The sound of a heartbeat results when the ventricles contract and blood is surged out of the heart.

Correct AnswerverifiedShow Answer

If a person has a blood pressure of 120/80,the "120" refers to the

Correct AnswerverifiedShow Answer

Compare the structural differences between the walls of arteries and veins.

Correct AnswerverifiedBoth arterial and venous walls are compo...View AnswerShow Answer

Neutrophils and lymphocytes are types of

Correct AnswerverifiedShow Answer

The two enzymes in the clotting process are

Correct AnswerverifiedShow Answer

Oxygenated blood enters the heart at the

Correct AnswerverifiedShow Answer

In a hypothetical experiment,the blood flow between two dogs is joined and one dog is stressed so that its heart rate goes up rapidly.What will happen to the heart rate of the second dog?

Correct AnswerverifiedShow Answer

Lymph,such as that collected under a blister,contains all the components of blood except

Correct AnswerverifiedShow Answer

In the tissues,oxygen and nutrients enter the capillaries and carbon dioxide and wastes leave the capillaries.

Correct AnswerverifiedShow Answer

A person with normal blood volume and white cell count but low red cell count or low hemoglobin content may be suffering from

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A reading of 120/80 indicates blood velocity.

Correct AnswerverifiedShow Answer

The pulmonary semilunar valve prevents blood from re-entering the

Correct AnswerverifiedShow Answer

The blood vessel that provides oxygen to the heart tissue is the

Correct AnswerverifiedShow Answer

What is the correct sequence in which a drop of blood returning from the body encounters the heart valves?

Correct AnswerverifiedShow Answer

Hemoglobin is NOT

Correct AnswerverifiedShow Answer

You are unable to see arteries and arterioles without a microscope.

Correct AnswerverifiedShow Answer

The heart rate speeds up or slows down because the

Correct AnswerverifiedShow Answer

Correct Answer
verified

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Correct Answer
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Correct Answer
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verified
Both arterial and venous walls are compo...
View Answer

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Correct Answer
verified

Correct Answer
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Correct Answer
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