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EKG > Chapter 2 & 3 > Flashcards

Chapter 2 & 3 Flashcards

1
Q

A small muscular pouch like structure that fills the ventricles with blood

A

Atrium

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2
Q

A Lower chamber of the heart responsible for pumping blood to the lungs and entire body

A

Ventricle

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3
Q

A dividing wall or partition such as the one found between the two atria or between the two ventricles

A

Septum

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4
Q

The outermost layer of the heart

A

Epicardium

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5
Q

The middle muscular layer of the heart responsible for heart contraction

A

Myocardium

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6
Q

The innermost layer of the heart

A

Endocardium

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7
Q

A sac that encases the heart consisting of two layers and filled with a small amount of fluid that prevents friction with heart muscular action

A

Pericardium

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8
Q

One of three compartments inside the chest contains the heart and great vessels

A

Mediastinum

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9
Q

Decrease in length

A

Contract

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10
Q

The only arteries in the body that carry deoxygenated blood transport blood from the right ventricle of the heart to the lungs

A

Pulmonary Arteries

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11
Q

The largest artery in the human body which carries oxygenated blood away from the heart

A

Aorta

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12
Q

The only veins in the body that carry oxygenated blood delivering blood from the lungs to the left atrium of the heart

A

Pulmonary Veins

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13
Q

The arteries that supply oxygenated blood to the myocardium

A

Coronary Arteries

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14
Q

Supply with blood

A

Perfuse

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15
Q

A small mass of tissue, located in the right upper atrium, that serves as the heart’s primary pacemaker

A

SA Node

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16
Q

Specialized tissue that is able to regulate the impulses between atria and ventricles

A

AV Node

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17
Q

Complex process involving the opening of sodium and potassium channels on the surface of cardiac cells resulting in the loss of polarity

A

Depolarization

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18
Q

Slow heart rate

A

Bradycardia

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19
Q

A part of the conduction system responsible for receiving electrical impulses from the AV Node and transmitting the impulses to the bundle branches

A

Bundle of His

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20
Q

A small positive deflection that represents atrium depolarization the signal comes from the SA Nodes

A

P Waves

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21
Q

The lower pointed end of the heart

A

Apex

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22
Q

Part of the conduction system responsible for transmitting electrical impulses from the AV node to the Purkinje fibers to trigger ventricular depolarization

A

Bundle Branch

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23
Q

Fibers that serve to conduct electrical impulses through the right and left ventricles causing ventricular depolarization

A

Purkinje fibers

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24
Q

The ability of the cardiac cells to spontaneously generate electrical activity

A

Automaticity

25
Originating in an area of the heart other than the sinoatrial node
Ectopic
26
Component of the hearts electrical conduction system responsible for ensuring the near simultaneous depolarization of both atria
Bachmann’s bundle
27
Six EKG leads placed on the anterior chest to record unipolar electrical activity of the heart at a specified location
Precordial leads
28
Unipolar leads created by combining two of the three limbs leads to create a positive electrode called the aVR,aVL,and aVF leads
Augmented leads
29
Mark on the ekg tracing caused by factors other than the hearts electrical activity movement, electrical, or magnetic interference
Artifact
30
Rapid heart rate
Tachycardia
31
Between the ribs
Intercostal
32
An imaginary line through the middle of the clavicles that extends vertically
Midclavicular
33
An imaginary line through the axillary region that separates the front and back of the human body
Midaxillary
34
An upward presentation of the waveforms on the EKG tracing that is located above the isoelectric line
Positive Deflection
35
The downward presentation of waveforms on the EKG tracing that is located below the isoelectric line
Negative Deflection
36
The relaxation phase of the heart that prepares the heart for another depolarization
Repolarization
37
The period between specific electrical activities of the heart that is recorded on the EKG
Interval
38
An abnormal heart rhythm also called dysthymia
Arrhythmia
39
An instrument used to measure distances on an EKG tracing
Caliper
40
Gain or voltage
Amplitude
41
Decrease in oxygenation of tissues due to poor blood flow
Ischemia
42
The absence of any electrical activity in the heart
Asystole
43
Death of tissue due to a lack of oxygenation usually due to a blockage in circulation
Infarction
44
Red
V1
45
Yellow
V2
46
Green
V3
47
Blue
V4
48
Orange
V5
49
Purple
V6
50
Right chest about two inches below the clavicle
White Lead
51
Left chest, lower rib cage area
Red Lead
52
Left Chest, opposite of white lead
Black Lead
53
Right chest, fourth rib
Brown Lead
54
Right Lower chest, over a rib
Green Lead
55
The part of the EKG that demonstrates atrial or ventricular contraction
Complexes
56
The straight line on the EKG tracing between cardiac cycles where no electrical activity of the heart is being conducted and no deflection is noted
Isoelectric line
57
Rapid, wavelike contractions
Flutter
58
State of quivering with no organized contraction
Fibrillation
59
The excitement of the atria with a rise in internal pressure to forcefully push blood into the ventricles
Atrial kick

EKG (4 decks)

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