Question 1

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

Accepted Answer

A)  Pulmonary circuit
B)  Systemic circuit
C)   Coronoary circuitD) B) and C)
E) A) and C)

Question 2

Though the autonomic innervation by autonomic centers in the brainstem cannot initiate a heartbeat,it can increase or decrease the heart rate.

Accepted Answer

A) True 
 B)False

Question 3

The great cardiac vein runs alongside the

Accepted Answer

A)  anterior interventricular artery.
B)  posterior interventricular artery.
C)  right marginal artery.
D)  circumflex artery.
E)  coronary sinus.F) C) and D)
G) None of the above

Question 4

Development of the heart commences in the _______ week.

Accepted Answer

A)  first
B)  third
C)  fifth
D)  eighth
E)  tenthF) B) and E)
G) D) and E)

Question 5

The relatively small size of the Purkinje fibers allows for the extremely rapid impulse conduction through the ventricles.

Accepted Answer

A) True 
 B)False

Question 6

In an EKG,the T wave denotes

Accepted Answer

A)  depolarization of the atria.
B)  depolarization of the right ventricle.
C)  repolarization of the ventricles.
D)  closure of the AV valves.
E)  depolarization of the left ventricle.F) D) and E)
G) C) and D)

Question 7

The inferior chambers of the heart are the

Accepted Answer

A)  atria.
B)  auricles.
C)  ventricles.
D)  sulci.
E)  gyri.F) All of the above
G) B) and C)

Question 8

During isovolumetric relaxation,the semilunar valves ________________.

Accepted Answer

The answer of During isovolumetric relaxation,the semilunar valves ________________....

Question 9

Which structure marks the end of the left ventricle and the entrance to the aorta?

Accepted Answer

A)  Pulmonary semilunar valve
B)  Left atrioventricular valve
C)  Right atrioventricular valve
D)  Aortic semilunar valve
E)  Foramen ovaleF) B) and D)
G) B) and C)

Question 10

The foramen ovale is actually an opening in the

Accepted Answer

A)  interventricular septum.
B)  interatrial septum.
C)  fossa ovalis.
D)  aorticopulmonary septum.
E)  tetralogy of Fallot.F) A) and E)
G) None of the above

Question 11

The heart valves

Accepted Answer

A)  stabilize and hold the arteries leaving the heart.
B)  permit the passage of blood in one direction.
C)  separate the right and left sides of the heart.
D)  are only used in the fetal heart.
E)  direct the conduction impulse through the heart muscle.F) A) and D)
G) C) and E)

Question 12

Which correctly describes the heart's apex?

Accepted Answer

A)  Projects slightly anteroinferiorly toward the left side of the body
B)  Projects slightly anteroinferiorly toward the right side of the body
C)  Projects slightly posteroinferiorly toward the left side of the body
D)  Projects slightly posteroinferiorly toward the right side of the body
E)  Projects slightly posteroinferiorly toward the midline of the bodyF) A) and E)
G) B) and E)

Question 13

Cardiac muscle fibers

Accepted Answer

A)  contract as a single unit.
B)  are only loosely connected by the intercalated discs.
C)  have a low oxygen need.
D)  utilize hemoglobin as an energy source.E) All of the above
F) B) and C)

Question 14

Normal passage of blood from the atria to the ventricles only happens if the atrioventricular valves are open.

Accepted Answer

A) True 
 B)False

Question 15

Which may predispose one to inadequate coronary blood flow?

Accepted Answer

A)  Bradycardia
B)  Hypertension
C)  Angina pectoris
D)  Tachycardia
E)  None of these answers is correct.F) A) and B)
G) All of the above

Question 16

The papillary muscles attach to the cusps of the atrioventricular valves by means of the

Accepted Answer

A)  pectinate muscles.
B)  trabeculae carneae.
C)  conus arteriosus.
D)  chordae tendineae.
E)  tricuspid valve.F) A) and B)
G) C) and E)

Question 17

Which can be used to characterize blood flow in the human body?
A: There is a unidirectional blood flow.
B: Arteries always carry oxygenated blood.
C: Veins always carry deoxygenated blood.
D: Arteries carry blood away from the heart.
E: Veins carry blood toward the heart.

Accepted Answer

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

Question 18

The heartbeat is initiated by the cardiac muscle fibers of the _______________ node.

Accepted Answer

The answer of The heartbeat is initiated by the cardiac...

Question 19

The chordae tendineae are made out of

Accepted Answer

A)  collagen fibers.
B)  elastin fibers.
C)  hyaline cartilage.
D)  reticulin fibers.
E)  trabeculae carneae.F) B) and D)
G) B) and E)

Question 20

Which heart chambers pump deoxygenated blood?

Accepted Answer

A)  Left atrium and right atrium
B)  Left ventricle and right ventricle
C)  Right atrium and right ventricle
D)  Left atrium and left ventricle
E)  Right atrium and left ventricleF) B) and D)
G) A) and E)

Exam 22: Heart

The great cardiac vein runs alongside the

Correct AnswerverifiedShow Answer

Which correctly describes the heart's apex?

Correct AnswerverifiedShow Answer

Which structure marks the end of the left ventricle and the entrance to the aorta?

Correct AnswerverifiedShow Answer

The foramen ovale is actually an opening in the

Correct AnswerverifiedShow Answer

The chordae tendineae are made out of

Correct AnswerverifiedShow Answer

Which may predispose one to inadequate coronary blood flow?

Correct AnswerverifiedShow Answer

Cardiac muscle fibers

Correct AnswerverifiedShow Answer

During isovolumetric relaxation,the semilunar valves ________________.

Correct AnswerverifiedShow Answer

The heart valves

Correct AnswerverifiedShow Answer

Though the autonomic innervation by autonomic centers in the brainstem cannot initiate a heartbeat,it can increase or decrease the heart rate.

Correct AnswerverifiedShow Answer

The papillary muscles attach to the cusps of the atrioventricular valves by means of 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

Normal passage of blood from the atria to the ventricles only happens if the atrioventricular valves are open.

Correct AnswerverifiedShow Answer

The inferior chambers of the heart are the

Correct AnswerverifiedShow Answer

Which can be used to characterize blood flow in the human body? A: There is a unidirectional blood flow. B: Arteries always carry oxygenated blood. C: Veins always carry deoxygenated blood. D: Arteries carry blood away from the heart. E: Veins carry blood toward the heart.

Correct AnswerverifiedShow Answer

The heartbeat is initiated by the cardiac muscle fibers of the _______________ node.

Correct AnswerverifiedShow Answer

The relatively small size of the Purkinje fibers allows for the extremely rapid impulse conduction through the ventricles.

Correct AnswerverifiedShow Answer

Development of the heart commences in the _______ week.

Correct AnswerverifiedShow Answer

In an EKG,the T wave denotes

Correct AnswerverifiedShow Answer

Which heart chambers pump deoxygenated blood?

Correct AnswerverifiedShow Answer

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