Question 1

Figure 20-2 Cardiac Cycle
 
Use Figure 20-2 to answer the following questions:
-What volume is labeled "G" on the graph?

Accepted Answer

A)   cardiac output
B)   stroke volume
C)   end-systolic volume
D)   end-diastolic volume
E)   ejection fraction

Question 2

Cardiac muscle cells and skeletal muscle cells differ in a few ways. Which of the following is not one of them?

Accepted Answer

A)   Cardiac muscle cells are smaller in size.
B)   Cardiac muscle cells have a single, centered nucleus.
C)   Cardiac muscle cells branch.
D)   Skeletal muscle cells lack intercalated discs.
E)   Cardiac muscle cells lack transverse tubules.

Question 3

The AV node delay is beneficial because

Accepted Answer

A)   it allows time for the atria to contract.
B)   it allows time for the ventricles to contract.
C)   it allows time to send feedback to the brain about heartrate.
D)   it decreases neural stimulation of the heart.
E)   it hyperpolarizes the ventricular cell membranes.

Question 4

The bicuspid or mitral valve is located

Accepted Answer

A)   in the opening of the aorta.
B)   in the opening of the pulmonary trunk.
C)   where the venae cavae join the right atrium.
D)   between the right atrium and right ventricle.
E)   between the left atrium and left ventricle.

Question 5

The basic heartrate established by the SA node is called the

Accepted Answer

A)   pacemaker potential.
B)   action potential.
C)   vagal tone.
D)   sinus rhythm.
E)   SA potential.

Question 6

The first blood vessels to branch from the aorta are the ________ arteries.

Accepted Answer

A)   pulmonary
B)   coronary
C)   circumflex
D)   carotid
E)   subclavian

Question 7

Prominent muscular ridges in the anterior atrial wall and auricles are called

Accepted Answer

A)   pectinate muscles.
B)   conus arteriosus.
C)   papillary muscles.
D)   trabeculae carneae.
E)   fossa ovalis.

Question 8

The ________ is the difference between the resting and maximal cardiac output.

Accepted Answer

A)   end-systolic volume
B)   end-diastolic volume
C)   cardiac reserve
D)   stroke volume
E)   ejection fraction C

Question 9

Figure 20-2 Cardiac Cycle
 
Use Figure 20-2 to answer the following questions:
-What occurs at "A" on the graph?

Accepted Answer

A)   Semilunar valve opens.
B)   Semilunar valve closes.
C)   AV valve opens.
D)   AV valve closes.
E)   end systolic volume

Question 10

The pulmonary veins carry blood to the

Accepted Answer

A)   heart.
B)   lungs.
C)   brain.
D)   intestines.
E)   liver.

Question 11

The earlike extension of the atrium is the

Accepted Answer

A)   ventricle.
B)   coronary sinus.
C)   coronary sulcus.
D)   auricle.
E)   interatrial septum.

Question 12

The term used to describe fluid collecting in the pericardial cavity that restricts the movement of the heart is known as

Accepted Answer

A)   cardiac tamponade.
B)   mitral valve prolapse.
C)   pleural effusion.
D)   cardiomyopathy.
E)   pericarditis. A

Question 13

As blood leaves the right ventricle, it passes through the ________ and then into the pulmonary trunk.

Accepted Answer

A)   pulmonary veins
B)   conus arteriosus
C)   aorta
D)   inferior vena cava
E)   superior vena cava

Question 14

Cardiac output is increased by

Accepted Answer

A)   sympathetic stimulation.
B)   increased end systolic volume.
C)   decreased end diastolic volume.
D)   decreased venous return.
E)   inhibiting the atrial reflex.

Question 15

In-Text Figure Based Questions
-Which ion's entry causes rapid depolarization? Which ion's entry causes the plateau? Which ion's exit causesrepolarization? (Figure 20-15)

Accepted Answer

A)   sodium; calcium; potassium
B)   potassium; calcium; sodium
C)   calcium; sodium; potassium
D)   sodium; potassium; calcium
E)   sodium; iron; potassium

Question 16

As a result of the long refractory period in the cardiac action potential, cardiac muscle cannot exhibit

Accepted Answer

A)   tonus.
B)   treppe.
C)   tetany.
D)   recruitment.
E)   fatigue.

Question 17

There are ________ pulmonary veins.

Accepted Answer

A)   2
B)   4
C)   6
D)   8
E)   12 B

Question 18

The coronary sulcus is a groove that

Accepted Answer

A)   marks the border between the atria and ventricles.
B)   marks the boundary line between the right and left ventricles.
C)   marks the boundary line between the right and left atria.
D)   separates the atrioventricular valves from the atria.
E)   separates the coronary arteries from the coronary veins.

Question 19

The circumflex branch and the anterior interventricular artery are branches of the

Accepted Answer

A)   right coronary artery.
B)   left coronary artery.
C)   interventricular artery.
D)   coronary sinus.
E)   aorta.

Question 20

The ________ is an important ridge of muscle extending horizontally around the right ventricle from theinterventricular septum to the base of the anterior papillary muscle containing part of the conducting system.

Accepted Answer

A)   auricle
B)   pectinate muscle
C)   trabeculae carneae
D)   moderator band
E)   conus arteriosus

Exam 20: The Heart

Correct Answer
verified

Cardiac muscle cells and skeletal muscle cells differ in a few ways. Which of the following is not one of them?

Correct Answer
verified

The AV node delay is beneficial because

Correct Answer
verified

The bicuspid or mitral valve is located

Correct Answer
verified

The basic heartrate established by the SA node is called the

Correct Answer
verified

The first blood vessels to branch from the aorta are the ________ arteries.

Correct Answer
verified

Prominent muscular ridges in the anterior atrial wall and auricles are called

Correct Answer
verified

The ________ is the difference between the resting and maximal cardiac output.

Correct Answer
verified
C

Figure 20-2 Cardiac Cycle Use Figure 20-2 to answer the following questions: -What occurs at "A" on the graph?

Correct Answer
verified

The pulmonary veins carry blood to the

Correct Answer
verified

The earlike extension of the atrium is the

Correct Answer
verified

The term used to describe fluid collecting in the pericardial cavity that restricts the movement of the heart is known as

Correct Answer
verified
A

As blood leaves the right ventricle, it passes through the ________ and then into the pulmonary trunk.

Correct Answer
verified

Cardiac output is increased by

Correct Answer
verified

In-Text Figure Based Questions -Which ion's entry causes rapid depolarization? Which ion's entry causes the plateau? Which ion's exit causesrepolarization? (Figure 20-15)

Correct Answer
verified

As a result of the long refractory period in the cardiac action potential, cardiac muscle cannot exhibit

Correct Answer
verified

There are ________ pulmonary veins.

Correct Answer
verified
B

The coronary sulcus is a groove that

Correct Answer
verified

The circumflex branch and the anterior interventricular artery are branches of the

Correct Answer
verified

The ________ is an important ridge of muscle extending horizontally around the right ventricle from theinterventricular septum to the base of the anterior papillary muscle containing part of the conducting system.

Correct Answer
verified

Exam 20: The Heart

Figure 20-2 Cardiac Cycle Use Figure 20-2 to answer the following questions: -What volume is labeled "G" on the graph?

Correct AnswerverifiedShow Answer

Cardiac muscle cells and skeletal muscle cells differ in a few ways. Which of the following is not one of them?

Correct AnswerverifiedShow Answer

The AV node delay is beneficial because

Correct AnswerverifiedShow Answer

The bicuspid or mitral valve is located

Correct AnswerverifiedShow Answer

The basic heartrate established by the SA node is called the

Correct AnswerverifiedShow Answer

The first blood vessels to branch from the aorta are the ________ arteries.

Correct AnswerverifiedShow Answer

Prominent muscular ridges in the anterior atrial wall and auricles are called

Correct AnswerverifiedShow Answer

The ________ is the difference between the resting and maximal cardiac output.

Correct AnswerverifiedC

Figure 20-2 Cardiac Cycle Use Figure 20-2 to answer the following questions: -What occurs at "A" on the graph?

Correct AnswerverifiedShow Answer

The pulmonary veins carry blood to the

Correct AnswerverifiedShow Answer

The earlike extension of the atrium is the

Correct AnswerverifiedShow Answer

The term used to describe fluid collecting in the pericardial cavity that restricts the movement of the heart is known as

Correct AnswerverifiedA

As blood leaves the right ventricle, it passes through the ________ and then into the pulmonary trunk.

Correct AnswerverifiedShow Answer

Cardiac output is increased by

Correct AnswerverifiedShow Answer

In-Text Figure Based Questions -Which ion's entry causes rapid depolarization? Which ion's entry causes the plateau? Which ion's exit causesrepolarization? (Figure 20-15)

Correct AnswerverifiedShow Answer

As a result of the long refractory period in the cardiac action potential, cardiac muscle cannot exhibit

Correct AnswerverifiedShow Answer

There are ________ pulmonary veins.

Correct AnswerverifiedB

The coronary sulcus is a groove that

Correct AnswerverifiedShow Answer

The circumflex branch and the anterior interventricular artery are branches of the

Correct AnswerverifiedShow Answer

The ________ is an important ridge of muscle extending horizontally around the right ventricle from theinterventricular septum to the base of the anterior papillary muscle containing part of the conducting system.

Correct AnswerverifiedShow Answer

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C

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A

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B

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