Question 1

The right border of the heart is supplied by the

Accepted Answer

A)  circumflex artery.
B)  posterior interventricular artery.
C)  anterior interventricular artery.
D)  right marginal artery.
E)  great cardiac vein.F) C) and D)
G) A) and C)

Question 2

In an EKG,the P wave is generated when the

Accepted Answer

A)  ventricles depolarize.
B)  atria depolarize.
C)  atria repolarize.
D)  ventricles repolarize.
E)  Purkinje fibers initiate an impulse.F) C) and D)
G) B) and D)

Question 3

The great cardiac vein runs alongside the

Accepted Answer

A)  anterior interventricular artery.
B)  posterior interventricular artery.
C)  right marginal artery.
D)  aorta.
E)  coronary sinus.F) All of the above
G) B) and E)

Question 4

The metabolic pathways of cardiac muscle make it

Accepted Answer

A)  somewhat susceptible to heart attack,because it relies so exclusively on aerobic metabolism.
B)  extremely susceptible to heart attack,because it uses such a variety of fuel sources.
C)  somewhat susceptible to heart attack,because it has so few mitochondria.
D)  relatively resistant to heart attack,because it uses exclusively anaerobic metabolism.
E)  relatively resistant to heart attack,because it has a great capacity to accrue oxygen debt.F) A) and B)
G) D) and E)

Question 5

The layer of the heart wall composed of cardiac muscle tissue is the

Accepted Answer

A)  pericardium.
B)  myocardium.
C)  endocardium.
D)  pericardial cavity.
E)  pectinate muscle.F) None of the above
G) C) and D)

Question 6

The internal wall surface of each ventricle displays large,smooth,irregular muscular ridges called

Accepted Answer

A)  conus arteriosus.
B)  atrioventricular opening.
C)  trabeculae carneae.
D)  tendinous cords.
E)  pectinate muscles.F) B) and E)
G) D) and E)

Question 7

Like skeletal muscle cells,cardiac muscle cells have an absolute refractory period prior to repolarization.

Accepted Answer

A) True 
 B)False

Question 8

Which of the cardiovascular system's circuits has deoxygenated blood in its arteries

Accepted Answer

A)  Pulmonary circuit
B)  Visceral circuit
C)  Coronary circuit
D)  Systemic circuitE) None of the above
F) All of the above

Question 9

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) B) and C)
G) A) and B)

Question 10

Which layer is made of dense irregular connective tissue

Accepted Answer

A)  Myocardium
B)  Fibrous pericardium
C)  Epicardium
D)  Serous pericardium
E)  EndocardiumF) B) and D)
G) B) and E)

Question 11

Someone with tachyarrhythmia would be expected to show an abnormally

Accepted Answer

A)  small Q-T interval.
B)  large P-R interval.
C)  large R-R interval.
D)  high amplitude P wave.E) B) and C)
F) A) and B)

Question 12

The property that allows the heart to initiate each heartbeat itself is called __________________.

Accepted Answer

The answer of The property that allows the heart to...

Question 13

Which type of muscle cell exhibits a longer refractory period

Accepted Answer

A)  Cardiac muscle cell
B)  Skeletal muscle cellC) A) and B)
D) undefined

Question 14

During a cardiac cycle,how many of the four chambers contract at any one time

Accepted Answer

A)  1
B)  2
C)  4
D)  Highly variable,depending on the heart beat rate
E)  None of the choices is correct.F) B) and E)
G) A) and C)

Question 15

SA nodal cells are autorhythmic.

Accepted Answer

A) True 
 B)False

Question 16

Which are differences between cardiac muscle tissue and skeletal muscle tissue
A: The sarcoplasmic reticulum in cardiac muscle is less extensive.
B: The sarcoplasmic reticulum in cardiac muscle is more organized.
C: Cardiac muscle has intercalated discs;skeletal muscle does not.
D: Cardiac muscle has 1 or 2 nuclei per cell;skeletal muscle has multiple nuclei per cell.
E: Cardiac muscle has more well-defined terminal cisternae.

Accepted Answer

A)  a,c,d
B)  a,c,e
C)  b,c,e
D)  a,b,e
E)  b,d,eF) A) and B)
G) B) and E)

Question 17

Which circuit of the cardiovascular system is responsible for sending blood to the kidneys,stomach,and pelvic regions

Accepted Answer

A)  Pulmonary circuit
B)  Visceral circuit
C)  Coronary circuit
D)  Systemic circuitE) A) and C)
F) B) and C)

Question 18

The _______________ cardiac vein travels alongside the right marginal artery.

Accepted Answer

The answer of The _______________ cardiac vein travels alongside the...

Exam 19: Cardiovascular System: Heart

The great cardiac vein runs alongside the

Correct Answer
verified

Like skeletal muscle cells,cardiac muscle cells have an absolute refractory period prior to repolarization.

Correct Answer
verified

Which type of muscle cell exhibits a longer refractory period

Correct Answer
verified

The property that allows the heart to initiate each heartbeat itself is called __________________.

Correct Answer
verified

In an EKG,the P wave is generated when the

Correct Answer
verified

The right border of the heart is supplied by the

Correct Answer
verified

Which circuit of the cardiovascular system is responsible for sending blood to the kidneys,stomach,and pelvic regions

Correct Answer
verified

Which layer is made of dense irregular connective tissue

Correct Answer
verified

The metabolic pathways of cardiac muscle make it

Correct Answer
verified

Correct Answer
verified

Which prenatal structure forms the ascending aorta and pulmonary trunk

Correct Answer
verified

The internal wall surface of each ventricle displays large,smooth,irregular muscular ridges called

Correct Answer
verified

During a cardiac cycle,how many of the four chambers contract at any one time

Correct Answer
verified

SA nodal cells are autorhythmic.

Correct Answer
verified

The _______________ cardiac vein travels alongside the right marginal artery.

Correct Answer
verified

Which of the cardiovascular system's circuits has deoxygenated blood in its arteries

Correct Answer
verified

Someone with tachyarrhythmia would be expected to show an abnormally

Correct Answer
verified

The layer of the heart wall composed of cardiac muscle tissue is the

Correct Answer
verified

Exam 19: Cardiovascular System: Heart

The great cardiac vein runs alongside the

Correct AnswerverifiedShow Answer

Like skeletal muscle cells,cardiac muscle cells have an absolute refractory period prior to repolarization.

Correct AnswerverifiedShow Answer

Which type of muscle cell exhibits a longer refractory period

Correct AnswerverifiedShow Answer

The property that allows the heart to initiate each heartbeat itself is called __________________.

Correct AnswerverifiedShow Answer

In an EKG,the P wave is generated when the

Correct AnswerverifiedShow Answer

The right border of the heart is supplied by the

Correct AnswerverifiedShow Answer

Which circuit of the cardiovascular system is responsible for sending blood to the kidneys,stomach,and pelvic regions

Correct AnswerverifiedShow Answer

Which layer is made of dense irregular connective tissue

Correct AnswerverifiedShow Answer

The metabolic pathways of cardiac muscle make it

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which prenatal structure forms the ascending aorta and pulmonary trunk

Correct AnswerverifiedShow Answer

The internal wall surface of each ventricle displays large,smooth,irregular muscular ridges called

Correct AnswerverifiedShow Answer

During a cardiac cycle,how many of the four chambers contract at any one time

Correct AnswerverifiedShow Answer

SA nodal cells are autorhythmic.

Correct AnswerverifiedShow Answer

The _______________ cardiac vein travels alongside the right marginal artery.

Correct AnswerverifiedShow Answer

Which of the cardiovascular system's circuits has deoxygenated blood in its arteries

Correct AnswerverifiedShow Answer

Someone with tachyarrhythmia would be expected to show an abnormally

Correct AnswerverifiedShow Answer

The layer of the heart wall composed of cardiac muscle tissue is the

Correct AnswerverifiedShow Answer

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