Chapter 19—The Heart

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Structure of the Heart

Pathway of Blood through the Heart and Heart Valves

Conducting System and Innervation

Blood Supply to the Heart

and Disorders of the Heart

The Heart Throughout

Life

FINAL ROUND

Structure of the Heart: $100 Question

Which is correct about the fibrous pericardium?

a. It adheres to the diaphragm inferiorly.

b. It acts as a tough outer coat that holds the heart in place and prevents it from overfilling.

c. It is superficial to the double-layered serous pericardium.

d. All of the above BACK TO GAME

ANSWER

Structure of the Heart: $100 Answer

Which is correct about the fibrous pericardium?

a. It adheres to the diaphragm inferiorly.

b. It acts as a tough outer coat that holds the heart in place and prevents it from overfilling.

c. It is superficial to the double-layered serous pericardium.

d. All of the above BACK TO GAME

Structure of the Heart: $200 Question

Which layer forms the bulk of the heart and is the layer that actually contracts?

a. endocardium

b. myocardium c. endomysium

d. epicardium BACK TO GAME

ANSWER

Structure of the Heart: $200 Answer

Which layer forms the bulk of the heart and is the layer that actually contracts?

a. endocardium

b. myocardium c. endomysium

d. epicardium BACK TO GAME

Structure of the Heart: $300 Question

The ventricles of the heart contain __________.

a. pectinate muscles, crista terminalis, fossa ovalis

b. chordae tendineae, papillary muscles, fossa ovalis

c. trabeculae carneae, chordae tendineae, papillary muscles

d. papillary muscles, pectinate muscles, pulmonary trunk

BACK TO GAME

ANSWER

Structure of the Heart: $300 Answer

The ventricles of the heart contain __________.

a. pectinate muscles, crista terminalis, fossa ovalis

b. chordae tendineae, papillary muscles, fossa ovalis

c. trabeculae carneae, chordae tendineae, papillary muscles

d. papillary muscles, pectinate muscles, pulmonary trunk

BACK TO GAME

Structure of the Heart: $400 Question

The mitral valve, when closed, prevents blood from back-flowing into the _______.

a. right atrium

b. left atrium c. right ventricle

d. left ventricle BACK TO GAME

ANSWER

Structure of the Heart: $400 Answer

The mitral valve, when closed, prevents blood from back-flowing into the _______.

a. right atrium

b. left atrium c. right ventricle

d. left ventricle BACK TO GAME

Structure of the Heart: $500 Question

Horizontal ridges that line the anterior part of the right atrium and the left auricle are known as ________.

a. papillary muscles

b. pectinate muscles

c. chordae tendineae d. trabeculae carneae

BACK TO GAME

ANSWER

Structure of the Heart: $500 Answer

Horizontal ridges that line the anterior part of the right atrium and the left auricle are known as ________.

a. papillary muscles

b. pectinate muscles

c. chordae tendineae d. trabeculae carneae

BACK TO GAME

Pathway of Blood through the Heart and Heart Valves: $100 Question

The coronary sinus __________.

a. allows blood to move from ventricle to ventricle

b. is where blood enters when leaving the right ventricle

c. is a branch off the pulmonary trunk d. Returns almost all the venous

blood from the heart to the right atrium

BACK TO GAME

ANSWER

Pathway of Blood through the Heart and Heart Valves: $100 Answer

The coronary sinus __________.

a. allows blood to move from ventricle to ventricle

b. is where blood enters when leaving the right ventricle

c. is a branch off the pulmonary trunk d. Returns almost all the venous

blood from the heart to the right atrium

BACK TO GAME

Pathway of Blood through the Heart and Heart Valves: $200 Question

The pulmonary veins __________.

a. carry de-oxygenated blood to the left atrium

b. carry oxygenated blood to the left atrium

c. carry de-oxygenated blood to the lungs

d. are branches of the pulmonary trunk

BACK TO GAME

ANSWER

Pathway of Blood through the Heart and Heart Valves: $200 Answer

The pulmonary veins __________.

a. carry de-oxygenated blood to the left atrium

b. carry oxygenated blood to the left atrium

c. carry de-oxygenated blood to the lungs

d. are branches of the pulmonary trunk

BACK TO GAME

Pathway of Blood through the Heart and Heart Valves: $300 Question

Which of the following is correct about the left ventricle?

a. It generates the same contractile force as the right ventricle.

b. It experiences only systole. c. It pumps blood into the systemic

circuit. d. None of the above

BACK TO GAME

ANSWER

Pathway of Blood through the Heart and Heart Valves: $300 Answer

Which of the following is correct about the left ventricle?

a. It generates the same contractile force as the right ventricle.

b. It experiences only systole. c. It pumps blood into the systemic

circuit. d. None of the above

BACK TO GAME

Pathway of Blood through the Heart and Heart Valves: $400 Question

When the atrioventricular (AV) valves close, __________.

a. papillary muscles and chordae tendineae prevent AV valve flaps from everting

b. the left and right atria are in systole

c. the left and right ventricles are in diastole

d. both a and c BACK TO GAME

ANSWER

Pathway of Blood through the Heart and Heart Valves: $400 Answer

When the atrioventricular (AV) valves close, __________.

a. papillary muscles and chordae tendineae prevent AV valve flaps from everting

b. the left and right atria are in systole

c. the left and right ventricles are in diastole

d. both a and c BACK TO GAME

Pathway of Blood through the Heart and Heart Valves: $500 Question

Which is correct when the heart valves close?

a. The mitral valve closes slightly before the tricuspid valve.

b. The closing of AV valves produces the “dup” sound.

c. The closing of the semilunar valves produces the “lub” sound.

d. All of the above are correct. BACK TO GAME

ANSWER

Pathway of Blood through the Heart and Heart Valves: $500 Answer

Which is correct when the heart valves close?

a. The mitral valve closes slightly before the tricuspid valve.

b. The closing of AV valves produces the “dup” sound.

c. The closing of the semilunar valves produces the “lub” sound.

d. All of the above are correct. BACK TO GAME

Conducting System and Innervation: $100 Question

The heart’s pacemaker is known as __________.

a. the AV node

b. the Purkinje fibers c. the internodal fibers

d. the SA node BACK TO GAME

ANSWER

Conducting System and Innervation: $100 Answer

The heart’s pacemaker is known as __________.

a. the AV node

b. the Purkinje fibers c. the internodal fibers

d. the SA node BACK TO GAME

Conducting System and Innervation: $200 Question

Because it is nonconducting, what is true of the fibrous skeleton that separates the atria and ventricles?

a. It allows signals to be conducted from the atria to the ventricles.

b. It forces signals to travel to the ventricles through the AV node.

c. It is a conducting zone and allows signals to travel to the left atrium.

d. Both a and c are true. BACK TO GAME

ANSWER

Conducting System and Innervation: $200 Answer

Because it is nonconducting, what is true of the fibrous skeleton that separates the atria and ventricles?

a. It allows signals to be conducted from the atria to the ventricles.

b. It forces signals to travel to the ventricles through the AV node.

c. It is a conducting zone and allows signals to travel to the left atrium.

d. Both a and c are true. BACK TO GAME

Conducting System and Innervation: $300 Question

A lesion to the heart’s parasympathetic fibers would __________.

a. decrease heart rate

b. have no effect on heart rate c. increase heart rate

d. not allow for a heartbeat to be generated

BACK TO GAME

ANSWER

Conducting System and Innervation: $300 Answer

A lesion to the heart’s parasympathetic fibers would __________.

a. decrease heart rate

b. have no effect on heart rate c. increase heart rate

d. not allow for a heartbeat to be generated

BACK TO GAME

Conducting System and Innervation: $400 Question

The conducting zone carries impulses along which pathway?

a. AV node, SA node, AV bundle, Bundle branches, Purkinje fibers

b. SA node, AV node, AV bundle, Bundle branches, Purkinje fibers

c. AV node, SV node, AV bundle, Purkinje fibers, Bundle branches

d. SV node, AV node, Purkinje fibers, Bundle branches, Purkinje fibers

BACK TO GAME

ANSWER

Conducting System and Innervation: $400 Answer

The conducting zone carries impulses along which pathway?

a. AV node, SA node, AV bundle, Bundle branches, Purkinje fibers

b. SA node, AV node, AV bundle, Bundle branches, Purkinje fibers

c. AV node, SV node, AV bundle, Purkinje fibers, Bundle branches

d. SV node, AV node, Purkinje fibers, Bundle branches, Purkinje fibers

BACK TO GAME

Conducting System and Innervation: $500 Question

The cells of the SA and AV nodes are _________.

a. specialized smooth muscle cells b. short, branching cells with one or

two centrally located nuclei c. small, typical cardiac muscle cells d. both b and c

BACK TO GAME

ANSWER

Conducting System and Innervation: $500 Answer

The cells of the SA and AV nodes are _________.

a. specialized smooth muscle cells b. short, branching cells with one or

two centrally located nuclei c. small, typical cardiac muscle cells d. both b and c

BACK TO GAME

Blood Supply to the Heart and Disorders of the Heart: $100 Question

Which of the following are correct about the heart’s blood supply?

a. Coronary arteries supply the myocardium.

b. Its blood supply comes from branches of the pulmonary veins and the aorta.

c. The one and only major coronary artery is the coronary sinus.

d. all of the above BACK TO GAME

ANSWER

Blood Supply to the Heart and Disorders of the Heart: $100 Answer

Which of the following are correct about the heart’s blood supply?

a. Coronary arteries supply the myocardium.

b. Its blood supply comes from branches of the pulmonary veins and the aorta.

c. The one and only major coronary artery is the coronary sinus.

d. all of the above BACK TO GAME

Blood Supply to the Heart and Disorders of the Heart: $200 Question

Which of the following are risk factors for coronary artery disease (CAD)?

a. diabetes

b. smoking c. inactivity

d. all of the above BACK TO GAME

ANSWER

Blood Supply to the Heart and Disorders of the Heart: $200 Answer

Which of the following are risk factors for coronary artery disease (CAD)?

a. diabetes

b. smoking c. inactivity

d. all of the above BACK TO GAME

BACK TO GAME

Blood Supply to the Heart and Disorders of the Heart: $300 Question

Which is correct regarding angina pectoris?

a. It occurs most often during exercise.

b. It kills heart muscle cells.

c. It results only from tissue hypoxia. d. All of the above are correct. ANSWER

Blood Supply to the Heart and Disorders of the Heart: $300 Answer

Which is correct regarding angina pectoris?

a. It occurs most often during exercise.

b. It kills heart muscle cells.

c. It results only from tissue hypoxia. d. All of the above are correct.

BACK TO GAME

Blood Supply to the Heart and Disorders of the Heart: $400 Question

The right coronary artery branches into __________.

a. the anterior interventricular artery

b. the posterior interventricular artery c. the marginal artery

d. both b and c BACK TO GAME

ANSWER

Blood Supply to the Heart and Disorders of the Heart: $400 Answer

The right coronary artery branches into __________.

a. the anterior interventricular artery

b. the posterior interventricular artery c. the marginal artery

d. both b and c BACK TO GAME

Blood Supply to the Heart and Disorders of the Heart: $500 Question

The circumflex artery __________.

a. supplies the anterior part of the left

ventricle

b. is a branch of the left coronary artery

c. supplies only the left atrium d. does none of the above

BACK TO GAME

ANSWER

Blood Supply to the Heart and Disorders of the Heart: $500 Answer

The circumflex artery __________.

a. supplies the anterior part of the left

ventricle

b. is a branch of the left coronary artery

c. supplies only the left atrium d. does none of the above

BACK TO GAME

The Heart Throughout Life: $100 Question

The embryo’s heart starts pumping on the ________ day of its development.

a. 18th

b. 22nd c. 20th

d. 26th BACK TO GAME

ANSWER

The Heart Throughout Life: $100 Answer

The embryo’s heart starts pumping on the ________ day of its development.

a. 18th

b. 22nd c. 20th

d. 26th BACK TO GAME

The Heart Throughout Life: $200 Question

The correct direction of blood flow through the heart tube’s four bulges is _________.

a. bulbus cordis, ventricle, atrium, sinus venosus

b. sinus venosus, atrium, bulbus cordis, ventricle

c. sinus venosus, atrium, ventricle, bulbus cordis

d. atrium, sinus venosus, bulbus cordis, ventricle

ANSWER

BACK TO GAME

The Heart Throughout Life: $200 Answer

The correct direction of blood flow through the heart tube’s four bulges is _________.

a. bulbus cordis, ventricle, atrium, sinus venosus

b. sinus venosus, atrium, bulbus cordis, ventricle

c. sinus venosus, atrium, ventricle, bulbus cordis

d. atrium, sinus venosus, bulbus cordis, ventricle

BACK TO GAME

The Heart Throughout Life: $300 Question

The embryonic atrium eventually __________.

a. becomes the smooth-walled part of the atria

b. becomes the ridged portions of the right and left atria

c. gives rise to the SA node

d. Allows both a and c to happen

BACK TO GAME

ANSWER

The Heart Throughout Life: $300 Answer

The embryonic atrium eventually __________.

a. becomes the smooth-walled part of the atria

b. becomes the ridged portions of the right and left atria

c. gives rise to the SA node

d. Allows both a and c to happen

BACK TO GAME

The Heart Throughout Life: $400 Question

Until birth the two atria are connected by a hole in the interatrial septum called the _________. Upon closing it becomes the __________.

a. fossa ovalis; foramen ovale

b. foramen ovalis; fossa ovale

c. foramen ovale; fossa ovalis

d. foramen magnum; fossa magnum

BACK TO GAME

ANSWER

The Heart Throughout Life: $400 Answer

Until birth the two atria are connected by a hole in the interatrial septum called the _________. Upon closing it becomes the __________.

a. fossa ovalis; foramen ovale

b. foramen ovalis; fossa ovale

c. foramen ovale; fossa ovalis

d. foramen magnum; fossa magnum

BACK TO GAME

The Heart Throughout Life: $500 Question

Which are age-related changes affecting the heart?

a. hardening and thickening of the cusps of the heart valves

b. less efficient sympathetic control of the heart

c. greater amount of fibrous tissue replacing cardiac muscle cells

d. all of the above BACK TO GAME

ANSWER

The Heart Throughout Life: $500 Answer

Which are age-related changes affecting the heart?

a. hardening and thickening of the cusps of the heart valves

b. less efficient sympathetic control of the heart

c. greater amount of fibrous tissue replacing cardiac muscle cells

d. all of the above BACK TO GAME

FINAL ROUND Question

The defects associated with the Tetralogy of Fallot, one of a number of congenital heart defects, include __________.

a. pulmonary trunk is too narrow

b. wall of right ventricle is thickened

c. aorta opens from both ventricles d. all of the above

BACK TO GAME

ANSWER

FINAL ROUND Answer

The defects associated with the Tetralogy of Fallot, one of a number of congenital heart defects, include __________.

a. pulmonary trunk is too narrow

b. wall of right ventricle is thickened

c. aorta opens from both ventricles d. all of the above

BACK TO GAME