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
Q

Originating in an area of the heart other than the sinoatrial node

A

Ectopic

26
Q

Component of the hearts electrical conduction system responsible for ensuring the near simultaneous depolarization of both atria

A

Bachmann’s bundle

27
Q

Six EKG leads placed on the anterior chest to record unipolar electrical activity of the heart at a specified location

A

Precordial leads

28
Q

Unipolar leads created by combining two of the three limbs leads to create a positive electrode called the aVR,aVL,and aVF leads

A

Augmented leads

29
Q

Mark on the ekg tracing caused by factors other than the hearts electrical activity movement, electrical, or magnetic interference

A

Artifact

30
Q

Rapid heart rate

A

Tachycardia

31
Q

Between the ribs

A

Intercostal

32
Q

An imaginary line through the middle of the clavicles that extends vertically

A

Midclavicular

33
Q

An imaginary line through the axillary region that separates the front and back of the human body

A

Midaxillary

34
Q

An upward presentation of the waveforms on the EKG tracing that is located above the isoelectric line

A

Positive Deflection

35
Q

The downward presentation of waveforms on the EKG tracing that is located below the isoelectric line

A

Negative Deflection

36
Q

The relaxation phase of the heart that prepares the heart for another depolarization

A

Repolarization

37
Q

The period between specific electrical activities of the heart that is recorded on the EKG

A

Interval

38
Q

An abnormal heart rhythm also called dysthymia

A

Arrhythmia

39
Q

An instrument used to measure distances on an EKG tracing

A

Caliper

40
Q

Gain or voltage

A

Amplitude

41
Q

Decrease in oxygenation of tissues due to poor blood flow

A

Ischemia

42
Q

The absence of any electrical activity in the heart

A

Asystole

43
Q

Death of tissue due to a lack of oxygenation usually due to a blockage in circulation

A

Infarction

44
Q

Red

A

V1

45
Q

Yellow

A

V2

46
Q

Green

A

V3

47
Q

Blue

A

V4

48
Q

Orange

A

V5

49
Q

Purple

A

V6

50
Q

Right chest about two inches below the clavicle

A

White Lead

51
Q

Left chest, lower rib cage area

A

Red Lead

52
Q

Left Chest, opposite of white lead

A

Black Lead

53
Q

Right chest, fourth rib

A

Brown Lead

54
Q

Right Lower chest, over a rib

A

Green Lead

55
Q

The part of the EKG that demonstrates atrial or ventricular contraction

A

Complexes

56
Q

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

A

Isoelectric line

57
Q

Rapid, wavelike contractions

A

Flutter

58
Q

State of quivering with no organized contraction

A

Fibrillation

59
Q

The excitement of the atria with a rise in internal pressure to forcefully push blood into the ventricles

A

Atrial kick