Question 1

The alternating expansion and recoil of an arterial wall is termed a(n)

Accepted Answer

A)   ECG.
B)   EEG.
C)   pulse.
D)   hypertension.
E)   heart murmur.F) C) and E)
G) A) and E)

Question 2

In humans, the superior vena cava

Accepted Answer

A)   carries blood to the right atrium.
B)   carries blood away from the right atrium.
C)   joins with the aorta.
D)   has a high blood pressure.
E)   carries O2-rich blood.F) C) and D)
G) B) and E)

Question 3

Intrinsic control of heartbeat rate involves what mechanism(s) ?

Accepted Answer

A)   The AV node initiates heartbeat, although the SA node can generate a slower beat rate.
B)   The atrioventricular bundle initiates signals that travel to the Purkinje fibers.
C)   The Purkinje fibers initiate signals that travel to the atrioventricular bundle.
D)   The SA node initiates heartbeat and the AV node inhibits the heartbeat.
E)   The SA node initiates heartbeat, although the AV node can generate a slower beat rate.F) B) and C)
G) A) and E)

Question 4

Which phase of the ECG indicates ventricular excitation and contraction?

Accepted Answer

A)   P wave
B)   QRS wave
C)   T wave
D)   U wave
E)   I waveF) C) and D)
G) A) and B)

Question 5

Usually there is only one capillary bed between an artery and vein; an exception to this is the

Accepted Answer

A)   coronary vessels that serve the heart.
B)   pulmonary system that serves the lungs and where all factors are reversed.
C)   hepatic portal system which runs from the capillary bed in the intestine to the capillary bed in the liver via a hepatic portal vein.
D)   brain circulation which requires special continuous blood flow.
E)   large bones that lack capillaries but are fed by an artery/vein system.F) D) and E)
G) A) and C)

Question 6

Venous return does not depend on

Accepted Answer

A)   respiratory movements.
B)   skeletal muscle contractions.
C)   the presence of valves.
D)   limb movement.
E)   blood pressure.F) B) and D)
G) D) and E)

Question 7

Sphincter muscles regulate the opening and closing of arterioles leading to capillary beds, directing the flow of blood to different areas of the body depending on the body's needs.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following is a characteristic of hemoglobin?

Accepted Answer

A)   carried in red blood cells
B)   an oxygen transporter
C)   made of protein and heme
D)   a red pigment
E)   All of the answer choices are characteristics of hemoglobin.F) None of the above
G) B) and E) E

Question 9

Early doctors did not understand that blood flowed in a circuit. Instead, they assumed that blood ebbed and flowed like a tide in the body. William Harvey was the first to demonstrate the circulation of blood and convince the medical community. Which of the following observations would be evidence that blood was pumped through the body or flowed in a circuit?

Accepted Answer

A)   Dissecting a live fish shows the heart beating and blood moving, gushing one direction.
B)   A very tight tourniquet causes the arteries to swell on the side toward the heart, but not on the side of the ligature away from the heart.
C)   Measuring the volume of the heart and counting the beats per minute gives a value of 520 pounds of blood an hour, many times a person's volume.
D)   In surface veins, blood can be pressed past a valve toward the heart but not away from the heart.
E)   A cut made anywhere on the body results in blood seeping from the wound.F) C) and D)
G) B) and C)

Question 10

Researchers have long attempted to find a substitute for red blood cells, specifically the ability to carry oxygen. 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) C) and E)
G) All of the above E

Question 11

Stem cells are

Accepted Answer

A)   formed from the formed elements in the blood.
B)   found only in bone marrow.
C)   found only in embryos.
D)   capable of dividing and differentiating into many cell types, including neurons.
E)   incapable of dividing but can differentiate into any other type of cell.F) B) and D)
G) A) and D)

Question 12

In a coronary bypass operation, a stent is placed within the blockage and the clogged area is compressed.

Accepted Answer

A) True 
 B)False  False

Question 13

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) A) and C)
G) A) and E)

Question 14

Which of these statements accurately describes the heart? Check all that apply.

Accepted Answer

A)   The heart is a double pump.
B)   The heart helps maintain blood pressure.
C)   The heart makes red blood cells.
D)   The heart is composed primarily of muscle.
E)   The heart has an inner lining made of endothelium.F) D) and E)
G) C) and E)

Question 15

Which blood vessels carry blood away from the heart?

Accepted Answer

A)   capillaries
B)   venules
C)   veins
D)   arteries
E)   lymph vesselsF) A) and B)
G) A) and E)

Question 16

Which blood pressure is considered abnormally high for individuals who are under the age of 45?

Accepted Answer

A)   130/90 mm Hg
B)   90/130 mm Hg
C)   110/95 mm Hg
D)   95/140 mm Hg
E)   120/90 mm HgF) A) and B)
G) C) and E)

Question 17

Which of the following is correctly associated?

Accepted Answer

A)   arteries-blood toward the heart
B)   ventricles-receive blood from body
C)   valves-veins
D)   left heart-lungs
E)   inferior vena cava-receives oxygenated bloodF) A) and B)
G) A) and C)

Question 18

If you are tracing the path of blood from the right to the left side of the heart, you must mention the

Accepted Answer

A)   lungs.
B)   hepatic portal vein.
C)   aorta.
D)   superior vena cava.
E)   inferior vena cava.F) A) and B)
G) A) and E)

Question 19

The reason red blood cells only live about 120 days is because red blood cells

Accepted Answer

A)   lack a nucleus and therefore cannot defend themselves from a pathogen attack.
B)   lack a nucleus and therefore cannot repair and rebuild cell structures.
C)   are attacked and eaten by white blood cells.
D)   are physiologically inferior cells that are not made to last very long.
E)   are destroyed by the high levels of oxygen they carry.F) A) and B)
G) A) and C)

Question 20

The electrical changes that occur in the heart during contraction are recordings termed

Accepted Answer

A)   EEGs.
B)   ECGs.
C)   EGGs.
D)   EMGs.
E)   MIGs.F) B) and D)
G) A) and E)

Exam 12: Cardiovascular System

The alternating expansion and recoil of an arterial wall is termed a(n)

Correct Answer
verified

In humans, the superior vena cava

Correct Answer
verified

Intrinsic control of heartbeat rate involves what mechanism(s) ?

Correct Answer
verified

Which phase of the ECG indicates ventricular excitation and contraction?

Correct Answer
verified

Usually there is only one capillary bed between an artery and vein; an exception to this is the

Correct Answer
verified

Venous return does not depend on

Correct Answer
verified

Sphincter muscles regulate the opening and closing of arterioles leading to capillary beds, directing the flow of blood to different areas of the body depending on the body's needs.

Correct Answer
verified

Which of the following is a characteristic of hemoglobin?

Correct Answer
verified
E

Correct Answer
verified

Researchers have long attempted to find a substitute for red blood cells, specifically the ability to carry oxygen. Which of the following properties would be important for "artificial red blood cells"?

Correct Answer
verified
E

Stem cells are

Correct Answer
verified

In a coronary bypass operation, a stent is placed within the blockage and the clogged area is compressed.

Correct Answer
verified
False

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

Correct Answer
verified

Which of these statements accurately describes the heart? Check all that apply.

Correct Answer
verified

Which blood vessels carry blood away from the heart?

Correct Answer
verified

Which blood pressure is considered abnormally high for individuals who are under the age of 45?

Correct Answer
verified

Which of the following is correctly associated?

Correct Answer
verified

If you are tracing the path of blood from the right to the left side of the heart, you must mention the

Correct Answer
verified

The reason red blood cells only live about 120 days is because red blood cells

Correct Answer
verified

The electrical changes that occur in the heart during contraction are recordings termed

Correct Answer
verified

Exam 12: Cardiovascular System

The alternating expansion and recoil of an arterial wall is termed a(n)

Correct AnswerverifiedShow Answer

In humans, the superior vena cava

Correct AnswerverifiedShow Answer

Intrinsic control of heartbeat rate involves what mechanism(s) ?

Correct AnswerverifiedShow Answer

Which phase of the ECG indicates ventricular excitation and contraction?

Correct AnswerverifiedShow Answer

Usually there is only one capillary bed between an artery and vein; an exception to this is the

Correct AnswerverifiedShow Answer

Venous return does not depend on

Correct AnswerverifiedShow Answer

Sphincter muscles regulate the opening and closing of arterioles leading to capillary beds, directing the flow of blood to different areas of the body depending on the body's needs.

Correct AnswerverifiedShow Answer

Which of the following is a characteristic of hemoglobin?

Correct AnswerverifiedE

Correct AnswerverifiedShow Answer

Researchers have long attempted to find a substitute for red blood cells, specifically the ability to carry oxygen. Which of the following properties would be important for "artificial red blood cells"?

Correct AnswerverifiedE

Stem cells are

Correct AnswerverifiedShow Answer

In a coronary bypass operation, a stent is placed within the blockage and the clogged area is compressed.

Correct AnswerverifiedFalse

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

Correct AnswerverifiedShow Answer

Which of these statements accurately describes the heart? Check all that apply.

Correct AnswerverifiedShow Answer

Which blood vessels carry blood away from the heart?

Correct AnswerverifiedShow Answer

Which blood pressure is considered abnormally high for individuals who are under the age of 45?

Correct AnswerverifiedShow Answer

Which of the following is correctly associated?

Correct AnswerverifiedShow Answer

If you are tracing the path of blood from the right to the left side of the heart, you must mention the

Correct AnswerverifiedShow Answer

The reason red blood cells only live about 120 days is because red blood cells

Correct AnswerverifiedShow Answer

The electrical changes that occur in the heart during contraction are recordings termed

Correct AnswerverifiedShow Answer

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Correct Answer
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E

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E

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False

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