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Anatomy Colloquium 2 > Cardiovascular System EXAM ONE > Flashcards

Cardiovascular System EXAM ONE Flashcards

1
Q 
1.    How many chambers does the human heart contain?      
A.   2
B.   3
C.   4
D.   5
A
  1. The correct answer is C.
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2
Q 
2.    The layer of simple squamous epithelium that lines the inside of the heart is called
A.   Myocardium.
B.   Pericardium.
C.   Endocardium.
D.   Epicardium.
A
  1. The correct answer is C.
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3
Q 
3.    Blood transported by the pulmonary veins returns to the
A.   Left atrium.
B.   Right atrium.
C.   Right ventricle.
D.   Left ventricle.
A
  1. The correct answer is A.
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4
Q
  1. Which of these descriptions of the heart’s location is correct?
    A. The heart lies obliquely in the mediastinum.
    B. Its base is directed anteriorly and slightly superiorly.
    C. Its apex is directed posteriorly and slightly inferiorly.
    D. Two-thirds of the heart’s mass lies to the right of the midline of the sternum.
    E. All of above
A
  1. The correct answer is A.
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5
Q 
5.    The pulse is a direct reflection of the
A.   Cardiac  output.
B.   Blood  pressure.
C.   Venous  return.
D.   Heart  beat.
A
  1. The correct answer is D.
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6
Q 
6.    The audible sounds ("lub-dupp" sounds) that can be heard from the heart are made by the heart:
A.   Nodes.
B.   Ventricles.
C.   Atria. 
D.   Valves.
A
  1. The correct answer is D.
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7
Q 
7.    The valve located between the right atrium and the right ventricle is the:
A.   Tricuspid valve.
B.   Bicuspid valve.
C.   Mitral valve.
D.   Semilunar valve.
E.   None of above.
A
  1. The correct answer is A.
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8
Q 
8.    The bulk of the heart consists of:
A.   Striated muscle
B.   Cardiac muscle.
C.   Smooth muscle.
D.   Connective tissue.
A
  1. The correct answer is B.
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9
Q 
9.    The layer of serous membrane that covers the heart and lies closest to the sternum is the:
A.   Endocardium.
B.   Epicardium.  
C.   Myocardium.  
D.   Parietal pericardium.
E.   Visceral pericardium.
A
  1. The correct answer is D.
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10
Q 
10.Venous blood from the tissues and organs of the head, neck, chest, shoulders and upper extremities is received by the:
A.   Jugular veins.
B.   Subclavian veins.
C.   Superior vena cava.
D.   Inferior vena cava.
A

10.The correct answer is C.

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11
Q 
11.Oxygen, carbon dioxide, nutrients and wastes are exchanged through the thin walls of the:
A.   Arteries.        
B.   Capillaries.
C.   Veins.  
D.   Venules
A

11.The correct answer is B.

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12
Q 
12.The most common site for taking a person's pulse is the:
A.   Radial artery.
B.   Median artery.
C.   Carotid artery.
D.   Brachial artery.
A

12.The correct answer is A.

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13
Q

13.The way in which arteries of the pulmonary circuit differ from those of the systemic circuit is that:
A. There is no difference.
B. They carry deoxygenated blood.
C. They have a thicker tunica media.
D. They carry a greater proportion of the blood volume.

A

13.The correct answer is B.

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14
Q 
14.Which of the following is referred to as the pacemaker of the heart?
A.   Sinoatrial Node.       
B.   Purkinje Fibers.
C.   Atrioventricular Node.
D.   Endocardium.
A

14.The correct answer is A.

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15
Q 
15.The heart valves have a double layer of…………………..with a layer of………………. in between.
A.   Epicardium, myocardium.
B.   Epicardium, endocardium.
C.   Myocardium, endocardium.
D.   Endocardium, connective tissue.
E.   Connective tissue, epicardium.
A

15.The correct answer is D.

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16
Q 
16.Which of these structures is not present in cardiac muscle cells?
A.   Desmosomes.  
B.   Gap junctions.
C.   Smooth sarcoplasmic reticulum.
D.   Terminal cisternae.
E.   Transverse (T) tubules.
A

16.The correct answer is D.

17
Q

17.Which of the following statements is not correct regarding to right atrium?
A. It receives venous blood through three openings.
B. The sinoatrial node is contained within the posterior wall.
C. When contracted, it empties across the tricuspid valve into the right ventricle.
D. All of the above.

A

17.The correct answer is D.

18
Q 
18.The group of modified cardiac muscle cells that delays action potentials between the atria and the atrioventricular bundle is called the:
A.   AV node.
B.   Purkinje fibers.
C.   SA node.
D.   bundle branches.
E.   Apex.
A

18.The correct answer is A.

19
Q 
19.Blood vessels carrying blood away from the heart are called:
A.   Coronaries.
B.   Capillaries.
C.   Arteries.
D.   Lymphatics.
E.   Veins.
A

19.The correct answer is C.

20
Q

20.The correct sequence of parts that function to carry cardiac impulses is:
A. AV Node ===> SA Node ===> Purkinje fibers ===> Atrioventricular bundle.
B. AV Node ===> Atrioventricular bundle ===> Purkinje fibers ===> SA Node.
C. SA Node ===> Purkinje fibers ===> AV Node ===> Atrioventricular bundle.
D. SA Node ===> AV Node ===> Atrioventricular bundle ===> Purkinje fibers.
E. Atrioventricular bundle ===> SA Node ===> AV Node ===> Purkinje fibers.

A

20.The correct answer is D.

21
Q 
21.In an ECG, the P wave represents:
A.   Depolarization of the atria.
B.   Repolarization of the atria.
C.   Depolarization of the ventricles.
D.   Repolarization of the ventricles.
A

21.The correct answer is A.

22
Q

22.The depolarization phase of the cardiac muscle action potential occurs when
A. Voltage-gated Ca2+ ion channels open.
B. Voltage-gated K+ ion channels open.
C. Voltage-gated Na+ ion channels open.
D. Both A and B.
E. Both B and C.
F. Both A and C.

A

22.The correct answer is E.

23
Q 
23.Increased venous return to the heart causes increased
A.   Preload.
B.   Stroke volume.
C.   Cardiac output.
D.   Force of contraction.
E.   All of these.
A

23.The correct answer is B.

24
Q 
24. The brachiocephalic artery extends from the aortic arch to supply blood to which region(s) of the body?
A.   Head, Neck and Arms.
B.   Chest.
C.   Legs and Feet.         
D.   Abdominal.
A

24.The correct answer is A.

25
Q 
25.Which of the following fetal structures carries the most oxygenated blood?
A.   Ductus arteriosus.
B.   Umbilical arteries.
C.   Ductus venosus.
D.   Foramen ovale.
E.   Umbilical vein.
Check Answers
A

25.The correct answer is D.

Anatomy Colloquium 2 (19 decks)

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