Question 1

The pulmonary circuit

Accepted Answer

A)  sends oxygen-poor blood to the heart.
B)  sends oxygen-poor blood to the tissues.
C)  sends oxygen-poor blood to the lungs.
D)  brings oxygen-rich blood from the tissues.

Question 2

The apical heartbeat is heard by listening between the fifth and sixth ribs about 7.5 cm left of the midline.

Accepted Answer

A) True 
 B)False

Question 3

The right atrium receives blood directly from

Accepted Answer

A)  the superior vena cava and inferior vena cava only.
B)  the superior vena cava, inferior vena cava, and coronary sinus.
C)  the superior vena cava, inferior vena cava, and pulmonary veins.
D)  the pulmonary veins.

Question 4

When venous pressure is too low, ________ stimulate smooth muscles in the walls of veins to contract.

Accepted Answer

A)  parasympathetic reflexes
B)  sympathetic reflexes
C)  somatic reflexes
D)  carbon dioxide levels

Question 5

Tim runs 5 to 8 miles a day. He has an enlarged heart and low heart rate and blood pressure. He most likely has

Accepted Answer

A)  coronary artery disease.
B)  an arrhythmia.
C)  a very healthy cardiovascular system.
D)  atherosclerosis.

Question 6

The pulmonary trunk divides into the right and left pulmonary arteries about ________ centimeters above its origin.

Accepted Answer

A)  5
B)  8
C)  10
D)  12

Question 7

Central venous pressure is the pressure in the inferior vena cava at the central point of the abdomen.

Accepted Answer

A) True 
 B)False

Question 8

The structures that contain chemoreceptors that detect blood levels of oxygen and carbon dioxide are the

Accepted Answer

A)  aortic bodies.
B)  aortic sinuses.
C)  aortic branches.
D)  capillary buds.

Question 9

The aortic baroreceptor senses stretching of the aorta. How will the nervous system respond?

Accepted Answer

A)  Sympathetic signals will be sent to increase heart rate.
B)  Parasympathetic signals will be sent to decrease heart rate.
C)  Parasympathetic signals will be sent to increase heart rate.
D)  Sympathetic signals will be sent to decrease heart rate.

Question 10

Some studies theorize that yawning is a reflex triggered by increased blood pH as carbonic acid is produced to expel CO₂ by exhaling. Which structures would be stimulated to induce yawning if this theory is true?

Accepted Answer

A)  Arterial baroreceptors
B)  Baroreceptors in the aortic arch
C)  Free nerve endings in the blood vessels
D)  Aortic bodies and carotid bodies

Question 11

Pulse pressure is calculated by

Accepted Answer

A)  adding systolic and diastolic pressures.
B)  multiplying systolic and diastolic pressures.
C)  subtracting systolic pressure from diastolic pressure.
D)  subtracting diastolic pressure from systolic pressure.

Question 12

A person warming up after being cold feels a warm rush as blood flows quickly to the peripheral appendages. Nitric oxide is important in this situation because it

Accepted Answer

A)  raises blood pressure.
B)  raises blood temperature.
C)  relaxes the smooth muscle in the blood vessel wall.
D)  enhances gas exchange.

Question 13

A nurse wants to measure a patient's blood pressure. She will have to use a(n)

Accepted Answer

A)  stethoscope.
B)  sphygmomanometer.
C)  EKG.
D)  hemocytometer.

Question 14

The systemic circuit

Accepted Answer

A)  sends oxygen-poor blood to the heart.
B)  brings oxygen-rich blood from the tissues.
C)  brings oxygen-poor blood from the lungs.
D)  sends oxygen-rich blood to the tissues.

Question 15

Which of the following waves of an ECG pattern is/are correctly described?

Accepted Answer

A)  P wave-depolarization of atria
B)  QRS complex-repolarization of ventricles
C)  T wave-depolarization of ventricles
D)  QRST complex-depolarization of ventricles

Question 16

Which of the following correctly matches the valve to its function?

Accepted Answer

A)  Tricuspid valve-permits one-way blood flow from the right to the left atrium
B)  Pulmonary valve-permits one-way blood flow from the left ventricle to the aorta
C)  Mitral valve-permits one-way blood flow from the left atrium to the left ventricle
D)  Aortic valve-permits one-way blood flow from the right ventricle to the pulmonary trunk

Question 17

Which of the following is not a normal response to physical exercise?

Accepted Answer

A)  Increased heart rate
B)  Increased ventricular contraction
C)  Increased blood flow to the skeletal muscles
D)  Increased blood flow to the abdominal viscera

Question 18

Circulation is vital because it

Accepted Answer

A)  supplies oxygen and nutrients to and removes wastes from tissues.
B)  inflates the lungs.
C)  delivers carbon dioxide to tissues and removes excess oxygen.
D)  delivers wastes to tissues.

Question 19

Heart rate in a fetus is about ________, in a newborn about ________, and in an adult about ________.

Accepted Answer

A)  145; 140; 70
B)  70; 140; 145
C)  100; 100; 100
D)  200; 160; 120

Question 20

The longest vein in the body is the

Accepted Answer

A)  superior vena cava.
B)  great saphenous vein.
C)  internal iliac vein.
D)  hepatic portal vein.

Exam 15: Cardiovascular System

Circulation is vital because it

Correct AnswerverifiedShow Answer

Which of the following is not a normal response to physical exercise?

Correct AnswerverifiedShow Answer

Tim runs 5 to 8 miles a day. He has an enlarged heart and low heart rate and blood pressure. He most likely has

Correct AnswerverifiedShow Answer

Some studies theorize that yawning is a reflex triggered by increased blood pH as carbonic acid is produced to expel CO₂ by exhaling. Which structures would be stimulated to induce yawning if this theory is true?

Correct AnswerverifiedShow Answer

The pulmonary circuit

Correct AnswerverifiedShow Answer

The aortic baroreceptor senses stretching of the aorta. How will the nervous system respond?

Correct AnswerverifiedShow Answer

The pulmonary trunk divides into the right and left pulmonary arteries about ________ centimeters above its origin.

Correct AnswerverifiedShow Answer

Which of the following waves of an ECG pattern is/are correctly described?

Correct AnswerverifiedShow Answer

The structures that contain chemoreceptors that detect blood levels of oxygen and carbon dioxide are the

Correct AnswerverifiedShow Answer

The systemic circuit

Correct AnswerverifiedShow Answer

The apical heartbeat is heard by listening between the fifth and sixth ribs about 7.5 cm left of the midline.

Correct AnswerverifiedShow Answer

Which of the following correctly matches the valve to its function?

Correct AnswerverifiedShow Answer

Central venous pressure is the pressure in the inferior vena cava at the central point of the abdomen.

Correct AnswerverifiedShow Answer

When venous pressure is too low, ________ stimulate smooth muscles in the walls of veins to contract.

Correct AnswerverifiedShow Answer

A nurse wants to measure a patient's blood pressure. She will have to use a(n)

Correct AnswerverifiedShow Answer

The longest vein in the body is the

Correct AnswerverifiedShow Answer

Pulse pressure is calculated by

Correct AnswerverifiedShow Answer

Heart rate in a fetus is about ________, in a newborn about ________, and in an adult about ________.

Correct AnswerverifiedShow Answer

The right atrium receives blood directly from

Correct AnswerverifiedShow Answer

A person warming up after being cold feels a warm rush as blood flows quickly to the peripheral appendages. Nitric oxide is important in this situation because it

Correct AnswerverifiedShow Answer

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Heart rate in a fetus is about , in a newborn about , and in an adult about .

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