Transcript File - Dr. Jerry Cronin

Chapter 18 – The Heart
I Wear My
Heart on My
Sleeve
QRStions
Heartbreaker
My Heart
Bleeds for
You
$100
$100
$100
$100
$100
$200
$200
$200
$200
$200
$300
$300
$300
$300
$300
$400
$400
$400
$400
$400
$500
$500
$500
$500
$500
Have a Heart
FINAL ROUND
Have a Heart:
$100 Question
The region between the two pleural
cavities that contains the heart and great
vessels is called the ______?
a. Mediastinum
b. Visceral pericardium
c. Parietal pericardium
d. Pericardial cavity
ANSWER
BACK TO GAME
Have a Heart:
$100 Answer
The region between the two pleural
cavities that contains the heart and great
vessels is called the ______?
a. Mediastinum
b. Visceral pericardium
c. Parietal pericardium
d. Pericardial cavity
BACK TO GAME
Have a Heart:
$200 Question
Which layer of pericardium touches the heart?
a. Parietal pericardium
b. Pericardial sac
c. Fibrous pericardium
d. Visceral pericardium
ANSWER
BACK TO GAME
Have a Heart:
$200 Answer
Which layer of pericardium touches the heart?
a. Parietal pericardium
b. Pericardial sac
c. Fibrous pericardium
d. Visceral pericardium
BACK TO GAME
Have a Heart:
$300 Question
Which of the following is true of cardiac
muscle tissue?
a. Cardiac muscle cells are larger than skeletal
muscle cells.
b. Cardiac muscle is not striated.
c. Cardiac muscle cells have intercalated
discs.
d. Cardiac muscle cells are multinucleate.
ANSWER
BACK TO GAME
Have a Heart:
$300 Answer
Which of the following is true of cardiac
muscle tissue?
a. Cardiac muscle cells are larger than skeletal
muscle cells.
b. Cardiac muscle is not striated.
c. Cardiac muscle cells have intercalated
discs.
d. Cardiac muscle cells are multinucleate.
BACK TO GAME
Have a Heart:
$400 Question
Why is the left ventricle more muscular
than the right ventricle?
a. Because it pumps a larger volume of blood.
b. Because it contracts with force sufficient to
push blood through the systemic circuit.
c. Because the papillary muscles are stronger.
d. Both A and B are correct.
ANSWER
BACK TO GAME
Have a Heart:
$400 Answer
Why is the left ventricle more muscular
than the right ventricle?
a. Because it pumps a larger volume of blood.
b. Because it contracts with force sufficient to
push blood through the systemic circuit.
c. Because the papillary muscles are stronger.
d. Both A and B are correct.
BACK TO GAME
Have a Heart:
$500 Question
Where is the ANS headquarters for
cardiovascular control?
a. Cardiac plexus
b. SA and AV nodes
c. Medulla oblongata
d. Cervical and upper thoracic ganglia
ANSWER
BACK TO GAME
Have a Heart:
$500 Answer
Where is the ANS headquarters for
cardiovascular control?
a. Cardiac plexus
b. SA and AV nodes
c. Medulla oblongata
d. Cervical and upper thoracic ganglia
BACK TO GAME
I Wear My Heart on My Sleeve:
$100 Question
What is the importance of the 100 msec
delay at the AV node?
a. Atria must contract before the ventricles.
b. AV valves must have time to close.
c. Contraction of papillary muscle must
begin before ventricular contraction.
d. Tachycardia results if the delay is
absent.
ANSWER
BACK TO GAME
I Wear My Heart on My Sleeve:
$100 Answer
What is the importance of the 100 msec
delay at the AV node?
a. Atria must contract before the ventricles.
b. AV valves must have time to close.
c. Contraction of papillary muscle must
begin before ventricular contraction.
d. Tachycardia results if the delay is
absent.
BACK TO GAME
I Wear My Heart on My Sleeve:
$200 Question
Why is resting HR somewhat slower than
the 80 – 100 bpm set by the SA node?
a. The AV node slows the heart to an average
between its own rate and that of the SA node.
b. Parasympathetic innervation slows the HR.
c. The AV node takes over causing the HR to be
40 – 60 bpm.
d. None of these is correct.
ANSWER
BACK TO GAME
I Wear My Heart on My Sleeve:
$200 Answer
Why is resting HR somewhat slower than
the 80 – 100 bpm set by the SA node?
a. The AV node slows the heart to an average
between its own rate and that of the SA node.
b. Parasympathetic innervation slows the HR.
c. The AV node takes over causing the HR to be
40 – 60 bpm.
d. None of these is correct.
BACK TO GAME
I Wear My Heart on My Sleeve:
$300 Question
How is Cardiac Output (CO) calculated?
a. CO ml/min = (EDV – ESV) x SV
b. CO ml/min = HR bpm x SV ml/beat
c. CO ml/min = ESV/EDV
d. A and B are correct.
ANSWER
BACK TO GAME
I Wear My Heart on My Sleeve:
$300 Answer
How is Cardiac Output (CO) calculated?
a. CO ml/min = (EDV – ESV) x SV
b. CO ml/min = HR bpm x SV ml/beat
c. CO ml/min = ESV/EDV
d. A and B are correct.
BACK TO GAME
I Wear My Heart on My Sleeve:
$400 Question
What is happening during ventricular systole of
the cardiac cycle?
a. Rising atrial pressures push blood into the
ventricles.
b. All heart valves area closed and ventricles are
relaxing.
c. Both ventricular contraction and atrial diastole
take place.
d. Pressure in ventricles drops, which forces the
semilunar valves closed.
ANSWER
BACK TO GAME
I Wear My Heart on My Sleeve:
$400 Answer
What is happening during ventricular systole of
the cardiac cycle?
a. Rising atrial pressures push blood into the
ventricles.
b. All heart valves area closed and ventricles are
relaxing.
c. Both ventricular contraction and atrial diastole
take place.
d. Pressure in ventricles drops, which forces the
semilunar valves closed.
BACK TO GAME
I Wear My Heart on My Sleeve:
$500 Question
When during the cardiac cycle do ventricles
contain their maximal amount of blood? What is
this quantity called?
a. At the end of ventricular systole / ESV
b. At the end of atrial systole / EDV
c. At the end of ventricular diastole / EDV
d. B and C are correct.
ANSWER
BACK TO GAME
I Wear My Heart on My Sleeve:
$500 Answer
When during the cardiac cycle do ventricles
contain their maximal amount of blood? What is
this quantity called?
a. At the end of ventricular systole / ESV
b. At the end of atrial systole / EDV
c. At the end of ventricular diastole / EDV
d. B and C are correct.
BACK TO GAME
QRStions:
$100 Question
On an ECG reading, what does the P Wave
indicate?
a. Ventricular contraction
b. An abnormal heart condition
c. Atrial depolarization
d. Atrial diastole
ANSWER
BACK TO GAME
QRStions:
$100 Answer
On an ECG reading, what does the P Wave
indicate?
a. Ventricular contraction
b. An abnormal heart condition
c. Atrial depolarization
d. Atrial diastole
BACK TO GAME
QRStions:
$200 Question
What event is taking place during the Q-T
interval?
a. A single cycle of the cardiac cycle
b. An action potential
c. A single cycle of atrial depolarization and
repolarization
d. A single cycle of ventricular depolarization
and repolarization
ANSWER
BACK TO GAME
QRStions:
$200 Answer
What event is taking place during the Q-T
interval?
a. A single cycle of the cardiac cycle
b. An action potential
c. A single cycle of atrial depolarization and
repolarization
d. A single cycle of ventricular depolarization
and repolarization
BACK TO GAME
QRStions:
$300 Question
What factor could cause an increase in the size
of the QRS complex of an electrocardiogram
recording?
a. An increase in heart rate
b. A decrease in blood volume
c. A decrease in blood pressure
d. An increase in heart size
ANSWER
BACK TO GAME
QRStions:
$300 Answer
What factor could cause an increase in the size
of the QRS complex of an electrocardiogram
recording?
a. An increase in heart rate
b. A decrease in blood volume
c. A decrease in blood pressure
d. An increase in heart size
BACK TO GAME
QRStions:
$400 Question
What condition contributes to a reduction
in the size of the T wave?
a. Long-term high fat intake
b. Damage to the conduction pathway
c. Damage to the AV node
d. Coronary ischemia
ANSWER
BACK TO GAME
QRStions:
$400 Answer
What condition contributes to a reduction
in the size of the T wave?
a. Long-term high fat intake
b. Damage to the conduction pathway
c. Damage to the AV node
d. Coronary ischemia
BACK TO GAME
QRStions:
$500 Question
Why is there no wave corresponding to
atrial repolarization on an ECG reading?
a. It is masked by the QRS complex.
b. Atrial repolarization produces no
electrical effect at all.
c. It is masked by the P Wave.
d. None of these is correct.
ANSWER
BACK TO GAME
QRStions:
$500 Answer
Why is there no wave corresponding to
atrial repolarization on an ECG reading?
a. It is masked by the QRS complex.
b. Atrial repolarization produces no
electrical effect at all.
c. It is masked by the P Wave.
d. None of these is correct.
BACK TO GAME
Heartbreaker:
$100 Question
Which of the following affect(s) the rate of
venous return?
a. Cardiac output
b. Stroke volume
c. Heart rate
d. All of the above are correct.
ANSWER
BACK TO GAME
Heartbreaker:
$100 Answer
Which of the following affect(s) the rate of
venous return?
a. Cardiac output
b. Stroke volume
c. Heart rate
d. All of the above are correct.
BACK TO GAME
Heartbreaker:
$200 Question
How is eversion of the AV valves and
backflow of blood into the atria prevented?
a. Pressure of blood pushing against the valves
b. Contraction of the ventricles
c. Closure of the semilunar valves
d. Tightening of chordae tendineae and contraction
of papillary muscles
ANSWER
BACK TO GAME
Heartbreaker:
$200 Answer
How is eversion of the AV valves and
backflow of blood into the atria prevented?
a. Pressure of blood pushing against the valves
b. Contraction of the ventricles
c. Closure of the semilunar valves
d. Tightening of chordae tendineae and contraction
of papillary muscles
BACK TO GAME
Heartbreaker:
$300 Question
Doris was born with a malformed pulmonary
valve. How will that affect her circulation?
a. Blood will flow more efficiently into her
pulmonary trunk.
b. Blood will regurgitate into her right atrium.
c. Blood will flow back into her right ventricle.
d. Deoxygenated blood will continuously pass
around her systemic circuit.
ANSWER
BACK TO GAME
Heartbreaker:
$300 Answer
Doris was born with a malformed pulmonary
valve. How will that affect her circulation?
a. Blood will flow more efficiently into her
pulmonary trunk.
b. Blood will regurgitate into her right atrium.
c. Blood will flow back into her right ventricle.
d. Deoxygenated blood will continuously pass
around her systemic circuit.
BACK TO GAME
Heartbreaker:
$400 Question
Rick had a heart attack because of blockage of
his right coronary artery. Which regions of his
heart will be damaged by the blockage?
a. SA node and AV node
b. Interventricular septum and left atrium
c. Portions of both ventricles
d. A and C are correct.
ANSWER
BACK TO GAME
Heartbreaker:
$400 Answer
Rick had a heart attack because of blockage of
his right coronary artery. Which regions of his
heart will be damaged by the blockage?
a. SA node and AV node
b. Interventricular septum and left atrium
c. Portions of both ventricles
d. A and C are correct.
BACK TO GAME
Heartbreaker:
$500 Question
How does damage to the cardioinhibitory center
of the medulla affect heart rate? Why?
a. Heart rate increases / Sympathetic dominance
b. Heart rate decreases / Parasympathetic
dominance
c. Heart rate remains unchanged / Autonomic tone
makes delicate adjustments
d. Heart rate increases / Only the SA node will be
controlling heart rate
ANSWER
BACK TO GAME
Heartbreaker:
$500 Answer
How does damage to the cardioinhibitory center
of the medulla affect heart rate? Why?
a. Heart rate increases / Sympathetic dominance
b. Heart rate decreases / Parasympathetic
dominance
c. Heart rate remains unchanged / Autonomic tone
makes delicate adjustments
d. Heart rate increases / Only the SA node will be
controlling heart rate
BACK TO GAME
My Heart Bleeds for You:
$100 Question
Which blood vessels bring blood back into
the right atrium from systemic circulation?
a. Foramen ovale, pulmonary trunk, and ductus
arteriosus
b. Superior and inferior venae cavae
c. Superior and inferior venae cavae and coronary
sinus
d. Aorta, pulmonary trunk, and pulmonary veins
ANSWER
BACK TO GAME
My Heart Bleeds for You:
$100 Answer
Which blood vessels bring blood back into
the right atrium from systemic circulation?
a. Foramen ovale, pulmonary trunk, and ductus
arteriosus
b. Superior and inferior venae cavae
c. Superior and inferior venae cavae and coronary
sinus
d. Aorta, pulmonary trunk, and pulmonary veins
BACK TO GAME
My Heart Bleeds for You:
$200 Question
What is the effect on heart rate of NE
binding to beta-1 receptors?
a. Increases rate of depolarization
b. Decreases heart rate
c. Increases heart rate
d. A and C are correct.
ANSWER
BACK TO GAME
My Heart Bleeds for You:
$200 Answer
What is the effect on heart rate of NE
binding to beta-1 receptors?
a. Increases rate of depolarization
b. Decreases heart rate
c. Increases heart rate
d. A and C are correct.
BACK TO GAME
My Heart Bleeds for You:
$300 Question
Benjamin has an EDV of 120 ml, ESV of 45
ml, which gives him an SV of 75 ml. What is
his ejection fraction?
a. 45%
b. 75%
c. 37.5%
d. 60%
ANSWER
BACK TO GAME
My Heart Bleeds for You:
$300 Answer
Benjamin has an EDV of 120 ml, ESV of 45
ml, which gives him an SV of 75 ml. What is
his ejection fraction?
a. 45%
b. 75%
c. 37.5%
d. 60%
BACK TO GAME
My Heart Bleeds for You:
$400 Question
Frank has just run a marathon and his heart is
beating extremely rapidly. What happens to the
length of diastole and filling time?
a. Both increase
b. Both decrease
c. Length of diastole increases / filling time
decreases
d. Length of diastole decreases / filling time
increases
ANSWER
BACK TO GAME
My Heart Bleeds for You:
$400 Answer
Frank has just run a marathon and his heart is
beating extremely rapidly. What happens to the
length of diastole and filling time?
a. Both increase
b. Both decrease
c. Length of diastole increases / filling time
decreases
d. Length of diastole decreases / filling time
increases
BACK TO GAME
My Heart Bleeds for You:
$500 Question
Why is ESV lower when you are actively
exercising?
a. SV decreases and filling time increases.
b. EDV is very low and ventricular muscle is
stretched very little.
c. EDV increases and ventricular muscle produces
more forceful contractions ejecting more blood.
d. Parasympathetic stimulation causes it.
ANSWER
BACK TO GAME
My Heart Bleeds for You:
$500 Answer
Why is ESV lower when you are actively
exercising?
a. SV decreases and filling time increases.
b. EDV is very low and ventricular muscle is
stretched very little.
c. EDV increases and ventricular muscle produces
more forceful contractions ejecting more blood.
d. Parasympathetic stimulation causes it.
BACK TO GAME
FINAL ROUND Question
What is the most important factor in
considering cardiac function over time?
a. Cardiac output
b. Heart rate
c. Stroke volume
d. End systolic volume
ANSWER
BACK TO GAME
FINAL ROUND Answer
What is the most important factor in
considering cardiac function over time?
a. Cardiac output
b. Heart rate
c. Stroke volume
d. End systolic volume
BACK TO GAME