Chapter 18 – The Heart

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Have a HeartI Wear My

Heart on My Sleeve

QRStions HeartbreakerMy Heart

Bleeds for You

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 cavityBACK TO GAME

ANSWER

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 cavityBACK 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

BACK TO GAME

ANSWER

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.

BACK TO GAME

ANSWER

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.

BACK TO GAME

ANSWER

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

BACK TO GAME

ANSWER

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.

BACK TO GAME

ANSWER

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.

BACK TO GAME

ANSWER

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.

BACK TO GAME

ANSWER

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.

BACK TO GAME

ANSWER

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.

BACK TO GAME

ANSWER

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

BACK TO GAME

ANSWER

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

BACK TO GAME

ANSWER

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

BACK TO GAME

ANSWER

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

BACK TO GAME

ANSWER

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.BACK TO GAME

ANSWER

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.

BACK TO GAME

ANSWER

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

BACK TO GAME

ANSWER

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.

BACK TO GAME

ANSWER

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.

BACK TO GAME

ANSWER

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

BACK TO GAME

ANSWER

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

BACK TO GAME

ANSWER

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.

BACK TO GAME

ANSWER

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%BACK TO GAME

ANSWER

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

BACK TO GAME

ANSWER

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.

BACK TO GAME

ANSWER

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 volumeBACK TO GAME

ANSWER

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 volumeBACK TO GAME