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127 Terms

1

leaflets

flat, leaf-shaped structures that comprise the valves of the heart and prevent backflow of blood

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2

lumen

tubular space or channel within an organ or structure of the body, space

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3

viscosity

thickness

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4

artery

carry blood from the heart to all cells of the body

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5

tunica externa

outer coat of an artery that is composed of connective tissue

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6

tunica media

middle layer of an artery that is composed of smooth muscle

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7

tunica intima

thin, inner lining of the lumen

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8

capillaries

microscopic vessels that join the arterial system with the venous system

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9

vein

returns blood to the heart

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10

venules

veins form smaller vessels called

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11

valves

small structures within veins that prevent backflow of the blood

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12

pericardium

heart is enclosed in a sac called

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13

endocardium

serous membrane that lines the four chambers of the heart

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14

myocardium

muscular layer of the heart

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15

epicardium

the outermost layer of the heart

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16

right atrium and left atrium

chambers that collect blood

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17

right ventricle and left ventricle

chambers that pump blood from the heart

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18

pulmonary circulation

right ventricle pumps blood to the lungs

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19

systemic circulation

left ventricle pumps blood to the entire body

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20

superior and inferior vena cava

deoxygenated blood flows into the

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21

tricuspid valve

valve between the right atrium to the right ventricle

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22

left and right pulmonary artery

deoxygenated blood leaves the heart via

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23

pulmonic valve

prevents regurgitation from the right ventricle

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24

mitral valve

passage between left atrium and left ventricle

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25

aortic semilunar valve

valve in the aorta

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26

right and left coronary artery

vascularizes the heart

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27

left anterior descending artery and circumflex artery

the left coronary artery divides into two branches

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28

conduction tissue

specialized cardiac tissue that initiates and spreads contract

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29

sinoatrial node

located in the upper portion of the right atrium and has the ability to initiate and propagate each heartbeat

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30

pacemaker

the sinoatrial node is sometimes known as the

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31

atrioventricular node

causes the atria to contract

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32

bundle of His

tract of conduction fibers

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33

purkinje fibers

transmit impulses to right and left ventricles

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34

electrocardiograph

record of heart impulses

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35

P wave

depolarization of the atria

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36

QRS complex

depolarization of the ventricles

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37

T wave

repolarization of the ventricle

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38

blood pressure

force exerted by blood against the arterial walls

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39

systole

contraction phase

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40

diastole

relaxation phase

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41

sphygmomanometer

measures blood pressure

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42

aneurysm/o

aneurysm (widened blood vessel)

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43

angi/o, vascul/o

vessel (usually blood or lymph)

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44

aort/o

aorta

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45

-stenosis

narrowing, stricture

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46

arteri/o

artery

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47

-rrhexis

rupture

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48

arteriol/o

arteriole

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49

atri/o

atrium

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50

ather/o

fatty plaque

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51

-oma

tumor

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52

cardi/o, coron/o

heart

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53

electr/o

electricity

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54

embol/o

embolus (plug)

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55

hemangi/o

blood vessel

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56

my/o

muscle

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57

phleb/o, ven/o

vein

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58

-ectasis

dilation, expansion

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59

scler/o

hardening, sclera

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60

sept/o

septum

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61

sphygm/o

pulse

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62

-oid

resembling

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63

sten/o

narrowing, stricture

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64

thromb/o

blood clot

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65

valv/o, valvul/o

valve

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66

ventricul/o

ventricle (of the heart or brain)

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67

-cardia

heart condition

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68

endo-

in, within

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69

extra-

outside

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70

peri-

around

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71

trans-

across

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72

cardiology

medical specialty concerned with disorders of the cardiovascular system

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73

arteriosclerosis

progressive degenerative disease of arterial walls that causes them to become thick and brittle

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74

atheroma

cellular debris

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75

thrombus

clot

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76

infarction

tissue death

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77

ischemia

localized tissue anemia

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78

angina

tightness

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79

diaphoresis

excessive sweating

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80

hemiplegia

weakness or paralysis on one side of the body

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81

myalgia

muscle pain

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82

hyperlipidemia

elevated level of fatty substances in the blood

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83

statins

drugs that slow down or reserve fat buildup

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84

antihypertensives

control blood pressure

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85

anticoagulants

reduce thrombus formation

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86

endarterectomy

surgical removal of fatty deposits from the inside of the artery

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87

coronary artery disease (CAD)

any disease that interferes with coronary artery supplying blood

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88

necrosis

death of cells

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89

myocardial infarction

death of heart muscles

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90

endocarditis

inflammation of the inner lining of the heart

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91

vegetations

clumps

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92

mitral valve stenosis

narrowing of the mitral valve

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93

mitral valve insufficiency

impeding blood flow to the ventricle or not to close properly

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94

bioprosthetic

mechanical device or one made of human or animal tissue

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95

prophylactic treatment

antibiotics given to protect against infection before invasive procedures

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96

varicose veins

enlarged, engorged, twisted, superficial veins

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97

incompetent

do not function properly

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98

varices

varicose veins in the esophagus

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99

hemorrhoids

varicose veins in the rectum

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100

phlebitis

inflammation of a vein

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