Question 1

Which cavity first receives unoxygenated blood from the vena cava?

Accepted Answer

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

Question 2

These conducting fibers rapidly spread the electrical signal throughout the ventricles.

Accepted Answer

A)   bundle of His
B)   Purkinje fibers
C)   SA node
D)   AV node

Question 3

What is the name of the valve that prevents backflow of blood into the right atrium when the right ventricle contracts?

Accepted Answer

A)   mitral valve
B)   pulmonic valve
C)   semilunar valve
D)   tricuspid valve

Question 4

What event causes the pulmonic valve to open?

Accepted Answer

A)   the P wave
B)   an increase in the pressure within the right ventricle
C)   "lubb-dupp"
D)   contraction of the chordae tendineae

Question 5

Vessel(s) that carry(ies) blood from the pulmonary capillaries to the left atrium.

Accepted Answer

A)   aorta
B)   pulmonary artery
C)   pulmonary veins
D)   vena cava

Question 6

An accumulation of excess fluid in the pericardial space

Accepted Answer

A)   causes external compression of the heart.
B)   depresses the SA node,thereby eliminating pacemaker activity.
C)   causes valvular stenosis.
D)   causes a left-to-right shunt.

Question 7

Blood flows from the right atrium through this atrioventricular valve to the right ventricle.

Accepted Answer

A)   bicuspid
B)   mitral
C)   pulmonic
D)   tricuspid

Question 8

The aorta receives blood from the

Accepted Answer

A)   right ventricle.
B)   pulmonary veins.
C)   pulmonary artery.
D)   left ventricle.

Question 9

The pacemaker of the heart is located in the upper wall of the

Accepted Answer

A)   right atrium.
B)   right ventricle.
C)   left atrium.
D)   left ventricle.

Question 10

Which of the following is least descriptive of the myocardium?

Accepted Answer

A)   cardiac muscle,composed of actin and myosin arranged in sarcomeres
B)   thicker in the ventricles than the atria
C)   thicker in the left ventricle than the right ventricle
D)   thicker in the left atrium than the right ventricle

Question 11

Which structure "sees" oxygenated blood?

Accepted Answer

A)   tricuspid valve
B)   pulmonary artery
C)   pulmonary veins
D)   right semilunar valve

Question 12

Which of the following must precede ventricular contraction?

Accepted Answer

A)   ventricular relaxation
B)   "lubb-dupp"
C)   ventricular depolarization
D)   closing of the AV valves

Question 13

Which of the following is a result of ventricular contraction?

Accepted Answer

A)   The AV valves open.
B)   The semilunar valves close.
C)   Blood is pumped into the pulmonary artery and the aorta.
D)   Blood flows back into the atria.

Question 14

Which of the following is true of the structures of the electrical conduction system?

Accepted Answer

A)   The AV valve is the pacemaker.
B)   In normal sinus rhythm,the electrical signal arises within the SA node.
C)   The His-Purkinje system spreads the electrical system from the right atrium to the left atrium.
D)   The purpose of the AV node is to increase the speed at which the cardiac impulse	moves from the atria to the ventricles.

Question 15

The mitral and the bicuspid valves

Accepted Answer

A)   are semilunar valves.
B)   are both located on the right side of the heart.
C)   "see" only unoxygenated blood.
D)   are the same valves.

Question 16

Under what condition is blood most likely to flow "backward" (e.g.,from the left ventricle back into the left atrium) ?

Accepted Answer

A)   pulmonary artery hypertension
B)   left ventricular hypertrophy
C)   an insufficient mitral valve
D)   pulmonary edema

Question 17

Complete the sequence: blood flows from the pulmonary capillaries to the pulmonary veins to the left atrium to the left ventricle to the

Accepted Answer

A)   vena cava.
B)   pulmonary artery.
C)   aorta.
D)   circle of Willis.

Question 18

The purpose of this structure is to momentarily delay the spread of the signal from the atrium to the ventricles.

Accepted Answer

A)   SA node
B)   Purkinje fibers
C)   bundle of His
D)   AV node

Question 19

The Purkinje fibers

Accepted Answer

A)   open valves.
B)   pull on the cusps of the valves.
C)   conduct electrical signals throughout the ventricles.
D)   close valves.

Question 20

Complete the sequence: blood flows from the right atrium to the right ventricle to the pulmonary artery to the

Accepted Answer

A)   pulmonary veins.
B)   coronary arteries.
C)   pulmonary capillaries.
D)   vena cava.

Exam 16: Heart

Vessel(s) that carry(ies) blood from the pulmonary capillaries to the left atrium.

Correct AnswerverifiedShow Answer

The aorta receives blood from the

Correct AnswerverifiedShow Answer

Which of the following is true of the structures of the electrical conduction system?

Correct AnswerverifiedShow Answer

Which of the following is a result of ventricular contraction?

Correct AnswerverifiedShow Answer

Which of the following must precede ventricular contraction?

Correct AnswerverifiedShow Answer

The pacemaker of the heart is located in the upper wall of the

Correct AnswerverifiedShow Answer

Which cavity first receives unoxygenated blood from the vena cava?

Correct AnswerverifiedShow Answer

Which structure "sees" oxygenated blood?

Correct AnswerverifiedShow Answer

Complete the sequence: blood flows from the pulmonary capillaries to the pulmonary veins to the left atrium to the left ventricle to the

Correct AnswerverifiedShow Answer

The mitral and the bicuspid valves

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Blood flows from the right atrium through this atrioventricular valve to the right ventricle.

Correct AnswerverifiedShow Answer

The purpose of this structure is to momentarily delay the spread of the signal from the atrium to the ventricles.

Correct AnswerverifiedShow Answer

An accumulation of excess fluid in the pericardial space

Correct AnswerverifiedShow Answer

These conducting fibers rapidly spread the electrical signal throughout the ventricles.

Correct AnswerverifiedShow Answer

Which of the following is least descriptive of the myocardium?

Correct AnswerverifiedShow Answer

The Purkinje fibers

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Under what condition is blood most likely to flow "backward" (e.g.,from the left ventricle back into the left atrium) ?

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Complete the sequence: blood flows from the right atrium to the right ventricle to the pulmonary artery to the

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What event causes the pulmonic valve to open?

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What is the name of the valve that prevents backflow of blood into the right atrium when the right ventricle contracts?

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