Question 1

The parietal pericardium ___________.

Accepted Answer

A)   is found within the pericardial cavity
B)   is separated from the fibrous pericardium by serous fluid
C)   is also called the epicardium
D)   lines the internal surface of the fibrous pericardiumE) A) and C)
F) B) and C)

Question 2

If cardiac muscle is deprived of its normal blood supply, damage would primarily result from__________ .

Accepted Answer

A)   an inadequate supply of lactic acid
B)   a decrease in the number of available mitochondria for energy production
C)   a lack of nutrients to feed into metabolic pathways
D)   decreased delivery of oxygenE) A) and C)
F) A) and D)

Question 3

A 14-year-old girl undergoing a physical examination prior to being admitted to summer camp was found to have a loud diastolic murmur at the second intercostal space to the left side of the sternum. Explain the reason for the loud heart murmur associated with this girl's condition.

Accepted Answer

The heart murmur is due to inc...

Question 4

A Doppler ultrasound was performed on an infant who had symptoms of breathlessness and it was found that he had a patent ductus arteriosus. Discuss the location and function of the ductus arteriosus in the fetus and relate it to the reason for the infant's breathlessness.

Accepted Answer

The ductus arteriosus is a shunt between...

Question 5

A patient takes a nitroglycerin tablet sublingually for chest pain. Nitroglycerin acts directly on smooth muscle, producing relaxation and vessel dilation. How would this relieve chest pain?

Accepted Answer

Angina pectoris is thoracic pain caused ...

Question 6

The receiving chambers of the heart include the__________ .

Accepted Answer

A)   right and left atria
B)   right and left ventricles
C)   left atrium and ventricle
D)   right atrium and ventricleE) All of the above
F) B) and C)

Question 7

The left ventricular wall of the heart is thicker than the right wall in order to__________ .

Accepted Answer

A)   expand the thoracic cage during diastole
B)   accommodate a greater volume of blood
C)   pump blood with greater pressure
D)   pump blood through a smaller valveE) A) and D)
F) B) and C)

Question 8

An electrocardiogram (ECG) provides direct information about valve function.

Accepted Answer

A) True 
 B)False

Question 9

The foramen ovale__________ .

Accepted Answer

A)   is a condition in which the heart valves do not completely close
B)   is a connection between the pulmonary trunk and the aorta in the fetus
C)   connected the two atria in the fetal heart
D)   is a shallow depression in the interventricular septumE) A) and B)
F) A) and C)

Question 10

If the length of the absolute refractory period in cardiac muscle cells was the same as it is for skeletal muscle cells,__________ .

Accepted Answer

A)   tetanic contractions might occur, which would stop the heart's pumping action
B)   contractions would last as long as the refractory period
C)   pacemaker cells would cease to spontaneously depolarize
D)   it would be much longer before cardiac cells could respond to a second stimulationE) None of the above
F) B) and D)

Question 11

The second heart sound is heard during which phase of the cardiac cycle?

Accepted Answer

A)   isovolumetric relaxation
B)   ventricular filling
C)   ventricular ejection
D)   isovolumetric contractionE) A) and B)
F) All of the above

Question 12

What is the functional importance of the intercalated discs of cardiac muscle? What is the functional importance of the fibrous cardiac skeleton of the heart?

Accepted Answer

Intercalated discs contain anchoring des...

Question 13

Isovolumetric contraction__________ .

Accepted Answer

A)   occurs while the atrioventricular (AV)  valves are open
B)   occurs immediately after the aortic and pulmonary semilunar valves close
C)   refers to the short period during ventricular systole when the ventricles are completely closed chambers
D)   occurs only in people with heart valve defectsE) B) and D)
F) None of the above

Question 14

The term for pain associated with deficient blood delivery to the heart that may be caused by the transient spasm of coronary arteries is ___________.

Accepted Answer

A)   ischemia
B)   myocardial infarct
C)   pericarditis
D)   angina pectorisE) B) and C)
F) A) and C)

Question 15

What two important functions does the intrinsic cardiac conduction system perform?

Accepted Answer

The important functions of the intrinsic...

Question 16

If blood volume decreased dramatically due to massive bleeding, the autonomic nervous system will attempt to maintain cardiac output by increasing the heart rate.

Accepted Answer

A) True 
 B)False

Question 17

If the vagal nerves to the heart were cut, the result would be that ___________.

Accepted Answer

A)   the heart rate would increase by about 25 beats per minute
B)   the atrioventricular (AV)  node would become the pacemaker of the heart
C)   parasympathetic stimulation would increase, causing a decrease in heart rate
D)   the heart would stop, since the vagal nerves trigger the heart to contractE) All of the above
F) None of the above

Exam 18: The Cardiovascular System: the Heart

The foramen ovale__________ .

Correct Answer
verified

The term for pain associated with deficient blood delivery to the heart that may be caused by the transient spasm of coronary arteries is ___________.

Correct Answer
verified

A Doppler ultrasound was performed on an infant who had symptoms of breathlessness and it was found that he had a patent ductus arteriosus. Discuss the location and function of the ductus arteriosus in the fetus and relate it to the reason for the infant's breathlessness.

Correct Answer
verified
The ductus arteriosus is a shunt between...
View Answer

If cardiac muscle is deprived of its normal blood supply, damage would primarily result from__________ .

Correct Answer
verified

The second heart sound is heard during which phase of the cardiac cycle?

Correct Answer
verified

The left ventricular wall of the heart is thicker than the right wall in order to__________ .

Correct Answer
verified

What is the functional importance of the intercalated discs of cardiac muscle? What is the functional importance of the fibrous cardiac skeleton of the heart?

Correct Answer
verified
Intercalated discs contain anchoring des...
View Answer

If the vagal nerves to the heart were cut, the result would be that ___________.

Correct Answer
verified

If blood volume decreased dramatically due to massive bleeding, the autonomic nervous system will attempt to maintain cardiac output by increasing the heart rate.

Correct Answer
verified

The parietal pericardium ___________.

Correct Answer
verified

An electrocardiogram (ECG) provides direct information about valve function.

Correct Answer
verified

The receiving chambers of the heart include the__________ .

Correct Answer
verified

What two important functions does the intrinsic cardiac conduction system perform?

Correct Answer
verified
The important functions of the intrinsic...
View Answer

Isovolumetric contraction__________ .

Correct Answer
verified

A patient takes a nitroglycerin tablet sublingually for chest pain. Nitroglycerin acts directly on smooth muscle, producing relaxation and vessel dilation. How would this relieve chest pain?

Correct Answer
verified
Angina pectoris is thoracic pain caused ...
View Answer

A 14-year-old girl undergoing a physical examination prior to being admitted to summer camp was found to have a loud diastolic murmur at the second intercostal space to the left side of the sternum. Explain the reason for the loud heart murmur associated with this girl's condition.

Correct Answer
verified
The heart murmur is due to inc...
View Answer

If the length of the absolute refractory period in cardiac muscle cells was the same as it is for skeletal muscle cells,__________ .

Correct Answer
verified

Exam 18: The Cardiovascular System: the Heart

The foramen ovale__________ .

Correct AnswerverifiedShow Answer

The term for pain associated with deficient blood delivery to the heart that may be caused by the transient spasm of coronary arteries is ___________.

Correct AnswerverifiedShow Answer

A Doppler ultrasound was performed on an infant who had symptoms of breathlessness and it was found that he had a patent ductus arteriosus. Discuss the location and function of the ductus arteriosus in the fetus and relate it to the reason for the infant's breathlessness.

Correct AnswerverifiedThe ductus arteriosus is a shunt between...View AnswerShow Answer

If cardiac muscle is deprived of its normal blood supply, damage would primarily result from__________ .

Correct AnswerverifiedShow Answer

The second heart sound is heard during which phase of the cardiac cycle?

Correct AnswerverifiedShow Answer

The left ventricular wall of the heart is thicker than the right wall in order to__________ .

Correct AnswerverifiedShow Answer

What is the functional importance of the intercalated discs of cardiac muscle? What is the functional importance of the fibrous cardiac skeleton of the heart?

Correct AnswerverifiedIntercalated discs contain anchoring des...View AnswerShow Answer

If the vagal nerves to the heart were cut, the result would be that ___________.

Correct AnswerverifiedShow Answer

If blood volume decreased dramatically due to massive bleeding, the autonomic nervous system will attempt to maintain cardiac output by increasing the heart rate.

Correct AnswerverifiedShow Answer

The parietal pericardium ___________.

Correct AnswerverifiedShow Answer

An electrocardiogram (ECG) provides direct information about valve function.

Correct AnswerverifiedShow Answer

The receiving chambers of the heart include the__________ .

Correct AnswerverifiedShow Answer

What two important functions does the intrinsic cardiac conduction system perform?

Correct AnswerverifiedThe important functions of the intrinsic...View AnswerShow Answer

Isovolumetric contraction__________ .

Correct AnswerverifiedShow Answer

A patient takes a nitroglycerin tablet sublingually for chest pain. Nitroglycerin acts directly on smooth muscle, producing relaxation and vessel dilation. How would this relieve chest pain?

Correct AnswerverifiedAngina pectoris is thoracic pain caused ...View AnswerShow Answer

A 14-year-old girl undergoing a physical examination prior to being admitted to summer camp was found to have a loud diastolic murmur at the second intercostal space to the left side of the sternum. Explain the reason for the loud heart murmur associated with this girl's condition.

Correct AnswerverifiedThe heart murmur is due to inc...View AnswerShow Answer

If the length of the absolute refractory period in cardiac muscle cells was the same as it is for skeletal muscle cells,__________ .

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The ductus arteriosus is a shunt between...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Intercalated discs contain anchoring des...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The important functions of the intrinsic...
View Answer

Correct Answer
verified

Correct Answer
verified
Angina pectoris is thoracic pain caused ...
View Answer

Correct Answer
verified
The heart murmur is due to inc...
View Answer

Correct Answer
verified