Question 1

The cell-to-cell contacts of the cardiac muscle fibers are called

Accepted Answer

A)  Z discs.
B)  T-tubules.
C)  intercalated discs.
D)  cardiac discs.
E)  sarcoplasmic reticulum.F) C) and D)
G) A) and E)

Question 2

The inferior chambers of the heart are called ________________.

Accepted Answer

The answer of The inferior chambers of the heart are...

Question 3

Pectinate muscles are found on the

Accepted Answer

A)  anterior wall of the right atrium.
B)  posterior wall of the right ventricle.
C)  anterior wall of the right ventricle.
D)  anterior wall of the right and left atria.
E)  posterior wall of the right and left ventricles.F) C) and D)
G) D) and E)

Question 4

Which action causes the closure of the right atrioventricular valve?

Accepted Answer

A)  Contraction of the right atrium
B)  Contraction of the left atrium
C)  Contraction of the right ventricle
D)  Contraction of the left ventricle
E)  None of these answers is correct.F) B) and E)
G) B) and D)

Question 5

Which bears a close structural relationship with the fossa ovalis?

Accepted Answer

A)  Papillary muscles
B)  Trabeculae carneae
C)  Conus arteriosus
D)  Chordae tendineae
E)  Foramen ovaleF) A) and D)
G) B) and C)

Question 6

During ventricular diastole

Accepted Answer

A)  only the AV valves open.
B)  only the AV valves close.
C)  only the semilunar valves close.
D)  the semilunar valves close and the AV valves open.
E)  the semilunar valves open and the AV valves close.F) C) and D)
G) A) and B)

Question 7

Which values are reasonable for a healthy,80 kilogram resting adult?

Accepted Answer

A)  5.25 liters of blood pumped per ventricle per minute; 108,000 beats per day
B)  4.25 liters of blood pumped per ventricle per minute; 60,000 beats per day
C)  6.75 liters of blood pumped per ventricle per minute; 20,000 beats per day
D)  7.25 liters of blood pumped per ventricle per minute; 76,000 beats per day
E)  5.75 liters of blood pumped per ventricle per minute; 144,000 beats per dayF) A) and E)
G) A) and B)

Question 8

All cardiac veins eventually drain into the coronary sinus for return of the blood from the myocardium to the right atrium.

Accepted Answer

A) True 
 B)False

Question 9

The cardiac cycle is

Accepted Answer

A)  when the ventricles are contracting.
B)  when the atria are relaxed.
C)  when the atria are contracting.
D)  when the ventricles are relaxed.
E)  all the events involved with a single heart beat.F) A) and E)
G) B) and C)

Question 10

What part of the cardiac conduction system is located in the posterior wall of the right atrium,adjacent to the entrance of the superior vena cava?

Accepted Answer

A)  AV bundle
B)  Bundle branches
C)  Purkinje fibers
D)  AV node
E)  SA nodeF) A) and D)
G) A) and E)

Question 11

In an aging heart,increased flexibility of the heart valves may lead to a heart murmur.

Accepted Answer

A) True 
 B)False

Question 12

The left and right coronary arteries travel within the

Accepted Answer

A)   anterior interventricular sulcus.
B)   posterior interventricular sulcus.
C)   coronary sulcus.
D)   interventricular septum.
E)   interatrial septum.F) None of the above
G) A) and C)

Question 13

No matter the cause,hypertrophy of the heart causes it to work less efficiently.

Accepted Answer

A) True 
 B)False

Question 14

Which prenatal structure forms the ascending aorta and pulmonary trunk?

Accepted Answer

A)  Truncus arteriosus
B)  Sinus venosus
C)  Primitive atrium
D)  Primitive ventricle
E)  Conus cordisF) A) and E)
G) A) and C)

Question 15

During isovolumetric contraction,the atria are in

Accepted Answer

A)  systole.
B)  diastole.C) A) and B)
D) undefined

Question 16

Parasympathetic innervation decreases the heart rate,but generally tends to have no effect on the force of contractions.

Accepted Answer

A) True 
 B)False

Question 17

Typically,there are __________ papillary muscles that project from the wall of the left ventricle and attach to the chordae tendineae that support the left AV valve.

Accepted Answer

A)  three
B)  two
C)  a highly variable number of
D)  six
E)  noF) C) and D)
G) B) and E)

Exam 22: Heart

Pectinate muscles are found on the

Correct Answer
verified

The inferior chambers of the heart are called ________________.

Correct Answer
verified

In an aging heart,increased flexibility of the heart valves may lead to a heart murmur.

Correct Answer
verified

No matter the cause,hypertrophy of the heart causes it to work less efficiently.

Correct Answer
verified

What part of the cardiac conduction system is located in the posterior wall of the right atrium,adjacent to the entrance of the superior vena cava?

Correct Answer
verified

Which prenatal structure forms the ascending aorta and pulmonary trunk?

Correct Answer
verified

Parasympathetic innervation decreases the heart rate,but generally tends to have no effect on the force of contractions.

Correct Answer
verified

The left and right coronary arteries travel within the

Correct Answer
verified

The cardiac cycle is

Correct Answer
verified

All cardiac veins eventually drain into the coronary sinus for return of the blood from the myocardium to the right atrium.

Correct Answer
verified

Which action causes the closure of the right atrioventricular valve?

Correct Answer
verified

The cell-to-cell contacts of the cardiac muscle fibers are called

Correct Answer
verified

Which bears a close structural relationship with the fossa ovalis?

Correct Answer
verified

During isovolumetric contraction,the atria are in

Correct Answer
verified

Typically,there are __________ papillary muscles that project from the wall of the left ventricle and attach to the chordae tendineae that support the left AV valve.

Correct Answer
verified

During ventricular diastole

Correct Answer
verified

Which values are reasonable for a healthy,80 kilogram resting adult?

Correct Answer
verified

Exam 22: Heart

Pectinate muscles are found on the

Correct AnswerverifiedShow Answer

The inferior chambers of the heart are called ________________.

Correct AnswerverifiedShow Answer

In an aging heart,increased flexibility of the heart valves may lead to a heart murmur.

Correct AnswerverifiedShow Answer

No matter the cause,hypertrophy of the heart causes it to work less efficiently.

Correct AnswerverifiedShow Answer

What part of the cardiac conduction system is located in the posterior wall of the right atrium,adjacent to the entrance of the superior vena cava?

Correct AnswerverifiedShow Answer

Which prenatal structure forms the ascending aorta and pulmonary trunk?

Correct AnswerverifiedShow Answer

Parasympathetic innervation decreases the heart rate,but generally tends to have no effect on the force of contractions.

Correct AnswerverifiedShow Answer

The left and right coronary arteries travel within the

Correct AnswerverifiedShow Answer

The cardiac cycle is

Correct AnswerverifiedShow Answer

All cardiac veins eventually drain into the coronary sinus for return of the blood from the myocardium to the right atrium.

Correct AnswerverifiedShow Answer

Which action causes the closure of the right atrioventricular valve?

Correct AnswerverifiedShow Answer

The cell-to-cell contacts of the cardiac muscle fibers are called

Correct AnswerverifiedShow Answer

Which bears a close structural relationship with the fossa ovalis?

Correct AnswerverifiedShow Answer

During isovolumetric contraction,the atria are in

Correct AnswerverifiedShow Answer

Typically,there are __________ papillary muscles that project from the wall of the left ventricle and attach to the chordae tendineae that support the left AV valve.

Correct AnswerverifiedShow Answer

During ventricular diastole

Correct AnswerverifiedShow Answer

Which values are reasonable for a healthy,80 kilogram resting adult?

Correct AnswerverifiedShow Answer

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